2 years ago

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

Mathematics

2 answers:

tatyana61 [14]2 years ago

8 0

Answer:

137

Step-by-step explanation:

when x=4 , We substitute in the above equation

(7 x 4²)+(8x4)-7 = 112+25 =137

Goryan [66]2 years ago

4 0

Answer : 137

Explanation: basically you plug 4 into the x spots so; 7(4)^2 + 8(4) -7

=7(16) + 8(4) -7

= 112 + 32 - 7

= 144 -7

= 137

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