If f(x)=x^2, g(x)=5 x-6, then g[f(x)]= - Vidyadip

MCQ

If $f(x)=x^2, g(x)=5 x-6$, then $g[f(x)]=$

A
$25 x^2-60 x+36$
B
$5 x^2+6$
C
$25 x^2+60 x-36$
✓
$5 x^2-6$

✓

Answer

Correct option: D.

$5 x^2-6$

(D)
$g [ f (x)]=5[ f (x)]-6=5 x^2-6$

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