(4)(2)+7x-2
8+7x-2
7x-6.
This expression cannot be simplified further nor solved (because it is not equal to anything).
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7x + 2 = -4 7x + 2 - 2 = -4 - 2 7x = -6 7x/7 = -6/7 x = -6/7
x^2 +7x+12 = (x+3)(x+4) when factored
2x+4+7x-4 is the same as 9x
You can get it to vertex form by completing the square: y = x2 + 7x + 4 ∴ y = x2 + 7x + (7/2)2 - (7/2)2 + 4 ∴ y = (x + 7/2)2 - 49/4 + 16/4 ∴ y = (x + 7/2)2 - 33/4
(x+3)(x+4) = x²+7x+12