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CBSE Class 11-science Answered

If f and g are two functions such that f(x) = 5x + 2 and g(x) = , then find f + g and f – g.
Asked by Topperlearning User | 01 Aug, 2014, 07:51: AM
answered-by-expert Expert Answer
We have,
f open parentheses x close parentheses equals 5 x plus 2 space a n d space g open parentheses x close parentheses equals x squared plus 3 open parentheses f plus g close parentheses open parentheses x close parentheses equals 5 x plus 2 plus x squared plus 3 space space space space space space space space space space space space space space space space equals x squared plus 5 x plus 5 open parentheses f minus g close parentheses open parentheses x close parentheses equals minus x squared plus 5 x minus 1 space space space space space space space space space space space
Answered by | 01 Aug, 2014, 09:51: AM

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