Question

4x(2x+5) -1 and find its value for x=-1

Answer 1

Answer:

(-13)

Step-by-step explanation:

4x(2x+5) -1

Substitute x = -1

= 4(-1)(2(-1)+5) -1

= -4 (-2 + 5 ) - 1

= 8 - 20 - 1

= (-13)

         Hope it is helpful. Take care.

Answer 2

Answer:

-13

Step-by-step explanation:

4x(2x+5)-1

=4×-1(2×-1+5)-1

=-4(-2+5)-1

=-4(3)-1

=-12-1

=-13

Hope this helps