Mathematics
Senior High
Solved
線引いてあるところがわかりません💦
なぜこの形になるのですか?
4+26+2
(3) (a+b)(2+α)(2 + b) +2ab を因数分解せよ。
( 5 ) = (a + b)(4+2a+2b + ab) + zab
11 11
4a+2a² + 2ab + a²b + 46+ 2ab +26² + ab ²³² + 2ab
(b + 2) a² + 1b²+66+4) a+ 2b (b+2)
(a+b+2) { [b+2) α+26]
(a+b+2) (ab+ 2a + 2b)
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