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Q: Find the value of x in the equation x squared equals 6x minus 9?

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The value of x is 7

Using the discriminant for a quadratic equation the value of k works out as plus or minus 12.

The equation does not have a real number solution. Using the quadratic formula will give it's conjugate pair complex solution.

It is an equation and the value of n is 9

This is a simultaneous equation question: x-2y = -4 2x-y = 1 Multiply all terms in the top equation by 2: 2x-4y = -8 2x-y = 1 Subtract the bottom equation from the top equation remembering that a minus minus equals a plus: -3y = -9 Divide both sides of the equation by -3 to find the value of y remembering that a minus divided by a minus equals a plus: y = 3 Substitute the value of y into the original equations to find the value of x: Solution: x = 2 and y = 3

You can tell if an equation is a function if for any x value that you put into the function, you get only one y value. The equation you asked about is the equation of a line. It is a function.

It is a quadratic equation and the value of x is -7 or 6 x2 - 42 = (-x) x2 + x - 42 = 0 (x + 7) (x - 6) = 0

14.2

Choose any value for "x", replace that in the equation, and calculate the corresponding value for "y".

Using the quadratic equation formula the value of x is -8 or 5

a=64 b=8 (x+16x+64)=(x+8)^2

-6 when you multiply two minus numbers the minus signs cancel each other out so -12 * -6 = 72

( x - y )2There isn't enough information to answer this question because they have two squared variables and you do not know what is being squared. You would first need to either know the value of one of the variables and an equation of the value of both of the variables before you would be able to factor.

Without prior knowledge of the value of q or r, it is impossible to calculate the answer to this equation.

Because the value of C equals 13

The minimum value of the parabola is at the point (-1/3, -4/3)

10 squared means 10*10 which equals 100.

4 squared is 4 x 4 which equals 16.

y squared minus 9 (y*y)- 9 cannot be solved because there is no given value for 9.

6 (APEX)

2

64

Using the discriminant of b^2 -4ac = 0 the value of k works out as -2

No. It is only true for one value of x so it is an equation. An identity must be true for all values of x. An identity equation is like saying "in other words ... ".

For x = -4 2x2 + x = 2 (-4)2 + (-4) = 32 - 4 = 28