Write the sum in standard form
E) 1(x)-m(x)
1 answer:
Answer:
Step-by-step explanation:
l(x) - m(x) = 5x² - 7y² + 4xy - [ -10x² + 9y² - 12xy + 4]
= 5x² - 7y² + 4xy + 10x² - 9y² + 12xy - 4
= 5x² + 10x² - 7y² - 9y² + 4xy + 12xy - 4 {Combine like terms}
= 15x² - 16x² + 16xy - 4
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