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oee [108]
2 years ago
10

Find the square: (5x - 4y)2 (and please put the process of solving the equation)

Mathematics
1 answer:
satela [25.4K]2 years ago
7 0
(5x-4y)^2
(5x-4y)(5x-4y)

Multiply each term in one bracket in turn by the terms in the other bracket

(5x)(5x) = 25x^2
(5x)(-4y)=-20xy
(-4y)(5x)=-20xy
(-4y)(-4y)=16y^2

Put them together we have
25x^2-20xy-20xy-16y^2
25x^2-40xy-16y^2
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