Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

2x^2-7x+3=0 by method of completing square
Asked by g.pavithran2002 | 06 Jul, 2020, 04:35: PM
answered-by-expert Expert Answer
To solve 2x2 - 7x + 3 = 0 using completing square method
2x2 - 7x + 3 = 0
x2 - 7/2 x + 3/2 = 0
 
straight x squared minus 2 cross times 7 over 4 straight x plus 3 over 2 equals 0 straight x squared minus 2 cross times 7 over 4 straight x plus 49 over 16 minus 49 over 16 plus 3 over 2 equals 0 straight x squared minus 2 cross times 7 over 4 straight x plus open parentheses 7 over 4 close parentheses squared minus 49 over 16 plus 24 over 16 equals 0 open parentheses straight x minus 7 over 4 close parentheses squared plus fraction numerator 24 minus 49 over denominator 16 end fraction equals 0 open parentheses straight x minus 7 over 4 close parentheses squared plus fraction numerator negative 25 over denominator 16 end fraction equals 0 open parentheses straight x minus 7 over 4 close parentheses squared equals 25 over 16 straight x minus 7 over 4 equals plus-or-minus 5 over 4 straight x equals fraction numerator 7 plus-or-minus 5 over denominator 4 end fraction straight x equals 3 space or space straight x equals 1 half
Answered by Renu Varma | 07 Jul, 2020, 11:29: AM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 10 - Maths
2x²-x+1/8 solve by completing square method
Asked by gurjaeharsh | 16 Jun, 2022, 01:11: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
9x^2-6px+(p^2-q^2)=0...solve for X?
Asked by humangisevda28 | 14 Mar, 2022, 07:17: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
x^2+6x-(a^2+2a-8)=0
question image
Asked by anjalisinghdps16 | 15 Sep, 2020, 11:49: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
2x^2-7x+3=0 by method of completing square
Asked by g.pavithran2002 | 06 Jul, 2020, 04:35: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
how to solve X2+4
Asked by labheshvaidya | 17 Sep, 2019, 12:04: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
4x2-2(a2-b2)x+a2b2=0.solve eqn by completing square method.   
Asked by mayankgoransh0564 | 13 Jun, 2019, 09:14: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
using completing the square method show that the equation x square -8x-18 =0 has no solution
Asked by ajayrath7 | 22 Apr, 2019, 09:12: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Page 72 If one root of the two quadratic equations x2 + ax + b = 0 and x2  + bx + a = 0 is common , then a +  b = 1 a +  b = -1 ab = 1 ab = -1  
Asked by miniprasad | 13 Oct, 2018, 03:12: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
please tell how to solve this question   To express the quadratic equation n2 +8x-128=0 in form of (n+a)2=k2
Asked by ratendra.johri | 30 May, 2018, 12:19: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Solve by method of completing square.
Asked by Topperlearning User | 04 Nov, 2016, 09:59: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×