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Factorising -x2 + 7x + 18:
(a - x)(x + b) = -x2 + (b - a)x + ab
so ab = 18, b - a = 7 giving a = 2, b = 9:
(2 - x)(x + 9)
Wiki User
∙ 14y ago
Wiki User
∙ 12y ago-x2+7x+18 = (-x-2)(x-9) when factored
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What is the answer to 9x plus 6 equals 7x plus 18?
9x+6 = 7x+18 9x-7x = 18-6 2x = 12 x = 6
What is -24 7x plus 18?
It is a pair of expressions -24 and 7x + 18 which are unrelated to one another.
What is -x2 plus 7x plus 18?
-(x - 9)(x + 2)
What is 7x plus 3 equals -5 plus 2x plus 18?
It is an equation and the value of x is 2
What would the answer be to 5x plus 9 minus 7x plus 6 equals x plus 18?
Do you mean: 5x + 9 - 7x + 6 = x - 18 If so, you can solve this question at this manner: -2x + 15 = x - 18 3x = -3 x = -1
18 plus 7x-12 plus 5x simplify?
18 + 7x - 12 + 5x = ?18 - 12+ 7x - 5x = ?6 + 2x = ?
What is the answer to 9x plus 6 equals 7x plus 18?
9x+6 = 7x+18 9x-7x = 18-6 2x = 12 x = 6
What is -24 7x plus 18?
It is a pair of expressions -24 and 7x + 18 which are unrelated to one another.
What is 7x plus 6 equals -18?
7x + 6 = -18 7x = -24 x = -24/7 x = -3.428571 recurring (that is, -3.428571428571...)
What is the factor to x squared plus 7x minus 18?
(x2 + 7x - 18) = (x + 9)(x - 2)
What are the factors of the polynomial x2 plus 7x-18?
x^2 + 7x -18 = (x - 2)(x + 9)
What is 6x plus x?
6x+x=7x
Which expression is the factored equivalent of x2 plus 7x - 18?
x2+7x-18 = (x+9)(x-2) when factored
What is -x2 plus 7x plus 18?
-(x - 9)(x + 2)
What is 7x plus 3 equals -5 plus 2x plus 18?
It is an equation and the value of x is 2
What would the answer be to 5x plus 9 minus 7x plus 6 equals x plus 18?
Do you mean: 5x + 9 - 7x + 6 = x - 18 If so, you can solve this question at this manner: -2x + 15 = x - 18 3x = -3 x = -1
X2 plus 7x plus 10 equals?
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
