Mathematics
Junior High
Resolved
なぜピンクのところになるのかがよく分からないです💦
教えていただけたら嬉しいです💭🎀
a + b²c + bc²
=
= (b + c)a² + (b²+ 3bc+c²) a + bc(b + c)
= {a + (b + c)} {(b + c)a + bc} ay+
= (a + b + c)(ab + bc+ca) ()
(1) (5x) = (b + c)a² + (b²+3bc+c²)
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すごく分かりやすかったです
ありがとうございました🙇♀️🫧