0
First you need to make it equal 0 by subtracting 28 from the left.
x2-7x-18 = 0
Then you need to factorise it by finding two numbers that add to make -7 and multiply to make -18 and writing it in brackets like this.
(x-9)(x+2) = 0
Then you reverse the signs of the numbers in the brackets to get the two answers (this is a quadratic equation because it has an x2 so it will have two answers).
9 and -2
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B equals 10 plus a solve for a?
Not enough information to solve
Can you Solve 3x plus 6 equals x - 10?
x = -8
Solve the equation -10 equals 12 plus x?
the answer is-10 = 12 +xx= -10-12x=-22this is the answerx= -22
How do you solve the variable -3 plus x equals 7?
-3+x=7. x=10
Solve for 100x plus -89x equals 110?
x=10 100x-89x=110 11x=110 x=10
B equals 10 plus a solve for a?
Not enough information to solve
How do you solve 9-3 plus 4 equals?
10
Solve the system 5x equals 2x plus 28x plus 10?
x=35
Can you Solve 3x plus 6 equals x - 10?
x = -8
A plus 10 equals 7.9 solve?
A + 10 = 7.9Subtract 10 from each side:A = 7.9 - 10 = -2.1
Solve the equation a plus 4 equals 10?
a + 4 = 10(a + 4) - 4 = 10 - 4a = 6
Solve the equation 6x plus 10 equals 11x?
If 6x + 10 = 11x , then x=2.
Solve the equation 6x-10 equals 10x plus 22?
x=-8
How do you solve 8x plus -2 equals 10?
8x + -2 = 10 8x = 12 x = 1.5
How do you solve 6x plus 6 equals 2x-4?
4x=-10 x=-2.5
How do you solve 10 plus r equals 2r?
10+r = 2r Subtract r from both sides:- r = 10
Solve the equation -10 equals 12 plus x?
the answer is-10 = 12 +xx= -10-12x=-22this is the answerx= -22
