PB=x-8、BQ=2x
½(x-8)2x=15
x2-8x-15=0
(x-3)(x-5)=0
x=3、5
x=3、5は問題に合う。
A.3秒後と5秒後
間違ってたらスイマセン
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PB=x-8、BQ=2x
½(x-8)2x=15
x2-8x-15=0
(x-3)(x-5)=0
x=3、5
x=3、5は問題に合う。
A.3秒後と5秒後
間違ってたらスイマセン
Users viewing this question
are also looking at these questions 😉
