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3 years ago

5

Find (2x^2-4)-(5x^2+2)+(7x^2-5)

1 answer:

fomenos3 years ago

7 0

( 2x² - 4) - ( 5x² + 2 ) + ( 7x² - 5) = ( 2x² - 4 - 5x² - 2 + 7x² - 5)

= (2x² - 5x² + 7x² - 4 - 2 - 5)

= 4x² - 11

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