Question;
Factor: 5x2 – 15x – 20.
Choices:
(a) 5(x-4)(x+1),
(b) -2(x-4)(x+5),
(c) -5(x+4)(x-1),
(d) 5(x+4)(x+1).
Solution:
5x2 – 15x – 20.
= 5(x2 – 3x – 4).
= 5(x2 – 4x + x – 4).
= 5{x(x - 4) +1(x - 4)}.
= 5(x-4)(x+1).
Answer: (a). 5(x-4)(x+1)
Answer:
C.5(x+4)(x−1)
Step-by-step explanation:
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Answers & Comments
Question;
Factor: 5x2 – 15x – 20.
Choices:
(a) 5(x-4)(x+1),
(b) -2(x-4)(x+5),
(c) -5(x+4)(x-1),
(d) 5(x+4)(x+1).
Solution:
5x2 – 15x – 20.
= 5(x2 – 3x – 4).
= 5(x2 – 4x + x – 4).
= 5{x(x - 4) +1(x - 4)}.
= 5(x-4)(x+1).
Answer: (a). 5(x-4)(x+1)
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Answer:
C.5(x+4)(x−1)
Step-by-step explanation:
pareha tayo pala na answeran kana to happy to help