Question

Subtract ${3x}^{2} - 5y - 2$ from
$5y - {3x}^{2} + xy$ and find the value of the result if x = 2, y = -1.
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Answer 1

Answer:

-34

Step-by-step explanation:

Equation 1.

if x = 2 and y = -1

$(3 \times 4) -( 5 \times - 1) - 2$

$12 + 5 - 2 = 15$

Equation 2

$5y - 3 {x}^{2} + xy$

$(5 \times - 1) - (3 \times 4) +( 2 \times - 1)$

$- 5 - 12 - 2$

$- 19$

Equation 2 - Equation 1

$- 19 - 15 = - 34$

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