x2 - 7x + 10 = 0
(x - 5)(x - 2) = 0
x = 5 or 2
Check:
(5)2 - 7(5) + 10 = 0
25 - 35 + 10 = 0
0 = 0
(2)2 - 7(2) + 10 = 0
4 - 14 + 10 = 0
0 = 0
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The value of x2+7x+10 depends on the value of X. If x=1, then x2+7x+10 = 18 If x=2, then x2+7x+10 = 28 If x=3, then x2+7x+10 = 40 and so forth
x2 + 7x + 6 = (x + 6) (x + 1)
x^2+7x-30 = (x-3)(x+10)
"(x - 5)(x - 2)"
x2 + 7x - 8 = (x + 8)(x - 1)