Question

7b+(8a-7b^2/b) при a = -91 , b = 40

Answer 1

Упростим:
7b+8a-7b=8a
Выражение от b не зависит и при а=-91
равно -728

Answer 2

To evaluate the expression 7b + (8a - 7b^2/b) with the values a = -91 and b = 40, we can substitute the given values into the expression and perform the necessary calculations.

Let's substitute the values of a and b into the expression:

7b + (8a - 7b^2/b) = 7(40) + (8(-91) - 7(40)^2/40)

Now, let's simplify each part of the expression:

7(40) = 280

8(-91) = -728

7(40)^2 = 7(1600) = 11200

11200/40 = 280

Substituting these simplified values back into the expression:

280 + (-728 - 280) = 280 - 1008 = -728

Therefore, when a = -91 and b = 40, the value of the expression 7b + (8a - 7b^2/b) is -728.