expand-- (3x-2y+4) (3x-2y-4)
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(3x - 2y )² - (4)²
3x² + 4y² -12xy -16
Answered by
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3x(3x-2y+4)-2y(3x-2y-4)+4(3x-2y-4)
9x^2-6xy-12x-6xy+4y^2+8y+12x-8y-16
9x^2+4y^2-12xy-16
hope it help u
prachi7255:
is this right?
i think yes
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