Question

(ax+b)(2x+5)=6x2+cx+20=.... pake cara

Answer 1

(ax+b)(2x+5) = 6x² + cx + 20
itu keliatan
2a = 6 ; a = 3
5b = 20 ; b = 4
5a + 2b = c
15 + 8 = 23 = c
a = 3 ; b = 4 ; c = 23
(3x + 4)(2x+5) = 6x² + 23x + 20