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Q: What is the square of x2 plus 12x plus 20 equals 0?

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2*2 - 12x +16 =0 4 - 12x +16 =0 -12x + 16 +4 =0 -12x + 20 =0 -12x = -20 x = 1.666666667

2x + (10x - 4) = 20 2x + 10x - 4 = 20 12x - 4 = 20 12x = 24 x = 2

Use algebra. 12x+30=15x-20. Add 20 to both sides. 12x+50=15x. Subtract 12x from both sides. 50=3x. Divide both sides by 3. 16.666...=x

12x-3=2x+17 10x-3=17 10x=20 x=2

3x + x + 8 = 204x + 8 = 204x = 12x = 3

x + 12x + 20 = (x + 10)(x + 2)

If you mean: x^2 +12x +20 then it is (x+2)(x+10) when factored

If you want this in the form y=mx+c so that you can draw a straight-line graph, 12x + 4y-20 = 4 4y=-12x+24 /4: y=-3x+6 gradient is 3, y intercept at x=6

68

20 = 400

20

(x + 10)(x + 2)

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