Question 465105
x²y² - x² + y² - 3x + 2, when x = -4 and y = 5
= (-4)²(5)² - (-4)² + (5)² - 3(-4) + 2 {substituted in}
= 16(25) - 16 + 25 + 12 + 2 {evaluated exponents and multiplied -3 by -4}
= 400 - 16 + 25 + 12 + 2 {multiplied 16 by 25}
= 423 {added and subtracted}
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