keyannahhaskins keyannahhaskins

02-10-2018
Mathematics

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What is the value of –2x2 + 4y if x = –2 and y = 3?

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Katella Katella

02-10-2018

Simplify

((-2)(-2))(2)+(4)(3)

The answer is 20.

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asmikaulgud asmikaulgud

02-10-2018

You would first substitute x and y into the equation so: -2(-2)^2+4(3)

Then you solve:

-2(-2)^2+4(3)

8+12

so your answer will be 20

Answer Link

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