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alkolokoltseva
@alkolokoltseva
July 2022
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раскрыть скобки,используя формулу разности квадратов:
1)(2a+14b)(2a-14b)
2)(x+2y-13)(x+2y+13)
3)(1,1x+1,2)(1,2-1,1x)
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Ртуть3
Verified answer
1)(2a+14b)(2a-14b)=4a^2-196b^2
2)(x+2y-13)(x+2y+13)=(x+2y)^2-169
3)(1,1x+1,2)(1,2-1,1x)=1,44-1,21x^2
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Verified answer
1)(2a+14b)(2a-14b)=4a^2-196b^22)(x+2y-13)(x+2y+13)=(x+2y)^2-169
3)(1,1x+1,2)(1,2-1,1x)=1,44-1,21x^2