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53t3t
@53t3t
August 2022
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Мне скоро в школу,а я не понял помогите пожалуйста 635
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sangers1959
Verified answer
(3m-2n)²+5m(4n-m)=9m²-12mn+4n²+20mn-5m²=4m²+8mn+4n²=
=4(m²+2mn+n²)=4(m+n)².
(9x+2y)²-(8x+3y)(4x-4y)=81x²+36xy+4y²-32x²+20xy+12y²=
=49x²+56xy+16y²=(7x+4y)².
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Answers & Comments
Verified answer
(3m-2n)²+5m(4n-m)=9m²-12mn+4n²+20mn-5m²=4m²+8mn+4n²==4(m²+2mn+n²)=4(m+n)².
(9x+2y)²-(8x+3y)(4x-4y)=81x²+36xy+4y²-32x²+20xy+12y²=
=49x²+56xy+16y²=(7x+4y)².