ICSE Class 9 - Expansions Using Square Identities Videos
Expansions
Expansions, Expansions Using Square Identities
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(2X+3y+5)(2x+3y-5)
- if X+1÷x =6 find x-1/x ,x²-1/x²
- if a^2+b^2+c^2=20 and a+b+c=0 find ab+bc+ca
- Q16. 4a² - 12a + 9 - 49b²
- if X+y–z=4 and x²+y²+z²=30, then find value of xy–yz–zx.
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how can we solve 8 sum
- a+b=10 and a-b=2 find a^2 + b^2
- If x–1/x =3/2 ,then find x²–1/x²
- 9(b+2a)2-4a2
- Use identities to evaluate (i)(101)²