Mathematics
27.06.2021 19:17
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Factor completely. 15a² + 55a - 20 a. 5(3a² + 11a - 4) b. 5(a + 4)(3a - 1) c. (5a
Factor completely.
15a² + 55a - 20
a. 5(3a² + 11a - 4)
b. 5(a + 4)(3a - 1)
c. (5a + 2)(3a - 10)
d. (5a + 4)(3a - 5)
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15a² + 55a - 20
a. 5(3a² + 11a - 4)
b. 5(a + 4)(3a - 1)
c. (5a + 2)(3a - 10)
d. (5a + 4)(3a - 5)
sailormaries7101
4,8(88 marks)
To help explain how you get A for the
work backwards
5(3a²+11a-4)
multiply everything by 5
5×3a²=15a²
5×11a=55a
5×-4=-20
15a²+55a-20
work backwards
5(3a²+11a-4)
multiply everything by 5
5×3a²=15a²
5×11a=55a
5×-4=-20
15a²+55a-20
andreyvaught2754
4,5(29 marks)
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