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:
5(x2-3x-4)
= 5(x-4)(x+1)
Answered by
2
Answer:
hiii...
your answer is here !
option (A) is right answer !
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).
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