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).
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Answered by
2
Answer:
(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).
hope it helps
Answered by
1
Answer:
Step-by-step explanationMy answer is correct and also no way to expand it Toshika654 once clean u r eyes and watch again optionA is correct
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