Oh, what a happy little math problem we have here. To factorise x squared plus 7x, we can first look for a common factor, which in this case is x. So, we can factor out an x to get x(x + 7). And just like that, we've created a lovely little factorised expression.
(x + 11)(x - 4)
It is (x+3)(x+4) when factored
(x2 + 7x - 18) = (x + 9)(x - 2)
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
49/4 or 12.25
X squared + 7X + 12?
7x-x2 = x(7-x)
x(x-7)
Factorise it: (x + 5)(3x - 8)
13X squared + 7X + 12
x^2+7x-30 = (x-3)(x+10)
(x + 11)(x - 4)
if its x(squared) its 7x(cubed) if its 2xX its 14x(squared)
(x + 2)(x + 1)
7x2+49x-42 = 7(x2+7x-6)
It is (x+5)(x+1) when factored
It is (x+6)(x+7) when factored