Mathematics
Senior High

大至急‼️
なんで答えが2()から始まるのですか?2はどこからきてどういうふうに計算したらこうなるのですか?

(2) 2x°-5x+4=0 を解くと 5土/7i x = 4 したがって 2x?-5x+4 5+/7i 5-/7i 4 4

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