Consider 56 * 66 * 1
56 * (66 * 1)
56*(66)
(50 + 6) (60 + 6)
50(60 + 6) + 6(60 + 6)
(50*60) + (50*6) + (6*60) + (6*6)
3000 + 300 + 360 + 36
3696
Therefore, 56*66*1 = 3696
Source: www.icoachmath.com
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-56x-4
If the equation looks like this: (10x-3)(2x-5), then simplified it is 20x2-56x+15 If the equation looks like this: 10x-3(2x-5), then simplified it is 4x+15
-1
7X^2 -56X + 112 = 0 divide through by 7 X^2 - 8X + 16 = 0 factor (X-4)(X-4) X = 4
9/1 = 9.