Solve (375+125)^2 (125-375)^2 / 375x375-125x125
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Answer:
use identities
Explanation:
(a+b)²=a2+2ab+b²
(a-b)²=a²-2ab+b²
a²-b²=(a+b)(a-b)
(a+b)²=(a-b)²+4ab
(a-b)²=(a+b)²-4ab
(a+b+c)²=a²+b²+c²+2(ab+bc+ca)
(a+b+c)³=a³+b³+c³+3(a+b)(b+c)(c+a)
a³+b³+c³-3abc=(a+b+c)(a²+b²+c²-ab-bc-ca)
(a+b)³=a³+b³+3ab(a+b)
(a-b)³=a3-b3-3ab(a-b)
a³+b³=(a+b)(a²+b²-ab)
a³-b³=(a-b)(a²+b²+ab)
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