What is the value of the expression below when x=4x=4? 7x^2 +8x-7 7x 2 +8x−7

137

Step-by-step explanation:

The given expression:

We need to find the value of the expression when x=4.

So we just use the substitution property and substitute the value of x= 4 in the given expression , we get

Hence, the value of the expression at x=4 is 137.

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point