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Q: What is 20ab -8a squared?

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5a2 - 20ab - 25b2 = 5(a2 - 4ab - 5b2) = 5(a2 - 4ba - 5b2) since -5b*b = -5b2 and -5b + b = -4b, then = 5(a - 5b)(a + b)

24a2

This is not a difficult factorisation, as it is merely a normal factorisation with "a" stuck on the end of each number. 25a(2) - 20ab + 4b(2) (2b-5a)(2b-5a) This is: 2bx2b=4b(2) 2bx-5a=-10ab (twice) -5ax-5a=25a

4ab

15a + 20ab = zero5a(3 + 4b) = zerp5a=zero ............ a=zeroor3 + 4b = zero4b = -3 ............ b=-3/4

5a times 3a minus 8a = (5*3)*a2 - 8a = 15a2 - 8a

8a+48b=

In its most simplified form: = 12abc + 8bc - 20ab = 4b(3ac + 2c - 5a) = 4b[(c + 5/3)(3a + 2) - 10/3]

8a-a-a = 6a

8a-3b = 5

The GCF is 8a.

9a - 8a = a

The term is: 8a

8a - 15 = -3 8a = 15 - 3 8a = 12 a = 12/8 = 6/4 = 3/2

8A + (8A+8) + (8A+16) = 888 24A + 24 = 888 ===> 24A = 864 ===> A = 36 The multiples are 8A, 8A+8, 8A+16 = 288, 296, 304. Sum = 888.

8a/-9=12 8a=12x-9 8a=-108 a=-108/8 a=-13.5 Hence the required answer is -13.5

8a(5a2-1)

1

2

The variable is a. You can solve for it, like this: 8a - 9 = 7a - 6 8a = 7a + 3 8a - 7a = 3 a = 3

8a times (2 + 1)

5 over 2 thats the answer

A = 4

8a = 12 so a = 1.5

8a - 32 8(a - 4) that is it

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