Factor: 5x2 – 15x – 20.
(a) 5(x-4)(x+1),
(b) -2(x-4)(x+5),
(c) -5(x+4)(x-1),
(d) 5(x+4)(x+1).
Answers
Answered by
0
Answer:
OPTION (a).
Step-by-step explanation:
5x2 – 15x – 20.
= 5(x2 – 3x – 4).
= 5(x2 – 4x + x – 4).
= 5{x(x - 4) +1(x - 4)}.
= 5(x-4)(x+1).
Answered by
58
Step-by-step explanation:
Hey!!!...Here is ur answer
5x^2-15x-20
=> 5 [x^2-3x-4]
=> 5 [ x^2-4x+x-4]
=> 5[x (x-4)+1 (x-4)]
=> 5 (x-4)(x+1)
Hope it will help you
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