Question

If x = -1 and y = 2, find the value of the expression 2x square -y square ​

Answer 1

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Answer 2

Step-by-step explanation:

2x square - y square

$2x {}^{2} - y {}^{2} \: \: \: \: \: where \: x = - 1 \: \: \: \: y \: = \: 2$

2×(-1)×(-1)-(2)×(2)

2-4

-2