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Papessa [141]
3 years ago
11

If x = -9 and y = 3, evaluate the following expressions. :(4y)2 – (2x)?2.4y2 – 2x2​

Mathematics
1 answer:
Licemer1 [7]3 years ago
3 0

To evaluate the expressions, you substitute -9 for x and 3 for y into the expressions

(4y)^2 - (2x)

= (4(3))^2 - (2(-9))

= (12)^2 - (-18)

= 144 + 18

= 162

4y^2 - 2x^2

= 4(3)^2 - 2(-9)^2

= 4(9) - 2(81)

= 36 - 162 = -126

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