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x + 30 = 64 Therefore, x = 64 - 30 x = 34
-49
x2 +7x = 30 x2 +7x - 30 = 0 (x + 10)(x - 3) = 0 Now: x + 10 = 0 or x - 3 = 0 So: x = -10 or x = 3
6x - 1 = 29 => 6x = 30 => x = 5 Then x2 + x = 25 + 5 = 30