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Q: What is 8x2 plus 3x2?

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10x3 + 3x2

8X2+3X2=22m

3x2 + 24 + 16 = 3x2 + 40 which cannot be factorised.

8x2 + 16x + 8 = 0

3x2 + 27x +60

8x2 + 6x - 9 = (2x + 3)*(4x - 3)

8x2 + 2x - 1 = (4x - 1)(2x + 1).

3x2=6+38=44

8x2+6x-35 = (2x+5)(4x-7) when factored

8x2 + 15 + 26x = 8x2 + 26x + 15 = 8x2 + 20x + 6x + 15 = 4x(2x + 5) + 3(2x + 5) = (2x + 5)(4x + 3)

3x2 + 17x + c = 0, rearranging gives c = -3x2 - 17x

3x2 + 10x + 3 = (x + 3)(3x + 1).

-8x + 3x2 - 3

27

53

3x2 + 2x + 3 + x2 + x + 1 = 4x 2+ 3x + 4

x=5

(2x + 1)(4x + 7)

-3x2 + 16x + 12 = -3x2 + 18x - 2x + 12 = -3x*(x - 6) - 2(x - 6) = -(3x + 2)*(x - 6)

3x2 + 36x + 81 = 3(x2 + 13x + 27)

13

19

8x2+6x-35 = (4x-7)(2x+5) when factored

What are the factors? 2x3 - 8x2 + 6x = 2x(x - 1)(x - 3).

8x2(x + 3)