Question

Bagaimana cara menyelesaikan soal seperti r^2+10r-651=0 tolong jawab ya mksh

Answer 1

R² + 10r - 651 = 0
r² + 31r - 21r - 651 = 0
r(r + 31) - 21(r + 31) = 0
(r + 31)(r - 21) = 0
r = - 31 v r = 21
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