Question

y=(3x+5)(2x +x+7) then dy/dx​

Answer 1

Step-by-step explanation:

Here ,

y = (3x+5)(2x+x+7)

$y = 6 {x}^{2} + 3 {x}^{2} + 21x + 10x + 5x + 35 \\ \\ now \\ \\ y = 9 {x}^{2} + 36x + 35 \\ \\ \frac{dy}{dx} = 9(2)x + 36(1) + 0 \\ \\ \frac{dy}{dx} = 18x + 36$