Factorise this Quadratic expression. 3b2 + 16b + 20
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3b² + 16b +20 = 0
3b² + 10b + 6b +20 = 0
b(3b + 10) +2(3b + 10) = 0
(3b + 10)(b + 2) = 0
3b + 10 = 0 or b + 2 =0
b= -10/3 or b = -2
3b² + 10b + 6b +20 = 0
b(3b + 10) +2(3b + 10) = 0
(3b + 10)(b + 2) = 0
3b + 10 = 0 or b + 2 =0
b= -10/3 or b = -2
Answered by
2
3b² + 16b +20
3b² + 10b + 6b +20
b(3b + 10) +2(3b + 10)
(3b + 10)(b + 2)
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