x + 3 + 10 = x + 13
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It is: (-10)+(-3)+4 = -9
If x = 3, then x + 10 would be 3 + 10, which is 13.
3 + √x = 10 √ x = 10 - 3 √ x = 7 x = 7² x = 49
X + 3 = 10. X + 3 - 3 = 10 - 3 X = 7 Double check your solution. X + 3 = 10 7 + 3 = 10 10 = 10 So X + 3 = 10 when X = 7.
x^2 + 13x + 30 = 0 x^2 + 10x + 3x + 30 = 0 x(x + 10) + 3(x + 10) = 0 (x + 3)(x + 10) = 0 x = -3 or x = -10