Question

3x² + 5x (x=2)
find the value of the following
std 7 ncert with full method​

Answer 1

$\huge \red{22}$

3x² + 5x

3 x 2² + 5 x 2

= 3 x 2 x 2 + 5 x 2

= 6 x 2 + 5 x 2

= 12 + 5 x 2

= 12 + 10

= 22