Question

what should be subtracted from 6xy-5y²+4x² to get 7x²-4y-7xy?​

Answer 1

Answer:

The number that should be subtracted is 13xy -5y² -3x²+4y

Step-by-step explanation:

let the number be n

ATQ,

6xy-5y²+4x² - n = 7x²-4y-7xy

n = 6xy-5y²+4x²- (7x²-4y-7xy)

n = 6xy-5y²+4x²-7x²+4y+7xy

n = 13xy -5y² -3x²+4y

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Answer 2

3x²-4y-13xy+5y²

Step-by-step explanation:

$7x {}^{2} - 4y - 7xy - (6xy - 5y {}^{2} + 4x {}^{2} )$

$7x {}^{2} - 4y - 7xy - 6xy + 5y {}^{2} - 4x {}^{2}$

$7x {}^{2} - 4x {}^{2} - 4y - 7xy - 6xy + 5y {}^{2}$

$3x {}^{2} - 4y - 13xy + 5y {}^{2}$

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