Question

differentiate
y=(1+7x)^2​

Answer 1

y = (1+7x)²

$\dfrac{dy}{dx}$

= $\dfrac{d(1+7x)²}{d(1+7x)}$ . $\dfrac{d(1+7x)}{dx}$

= 2(1+7x).(7)

= 98x + 14 ans.