y2+7y=18
y2+7y-18=0
(y+9)(y-2)=0
y=-9 & y=2
(3x+4)(3x-4)=0 x=±4/3
The discriminant for the quadratic is b2-4ac = 302 - 4*4*45 = 900 - 720 = 180 Since 180 is not a perfect square, the roots of the equation are irrational and it is far from straightforward to solve such an equation by factoring.
(4/9) x = That's not an equation. If there were a number after the 'equals' sign, then we could calculate the value of 'x'. But as it is, there's no question there, so there's nothing to solve.
a equals 5
Equals anything... x is a variable. If that equation was set equal to zero then you could solve for x, but that is not what you have asked.
It is not an equation if it does not have an equals sign. You could simplify it but not solve it.
(3x+4)(3x-4)=0 x=±4/3
y=b+x+x^2 This is a quadratic equation. The graph is a parabola. The quadratic equation formula or factoring can be used to solve this.
Quadratic equation formula
Solve by factoring. Solve by taking the square root of both sides.
It means you are required to "solve" a quadratic equation by factorising the quadratic equation into two binomial expressions. Solving means to find the value(s) of the variable for which the expression equals zero.
The discriminant for the quadratic is b2-4ac = 302 - 4*4*45 = 900 - 720 = 180 Since 180 is not a perfect square, the roots of the equation are irrational and it is far from straightforward to solve such an equation by factoring.
(4/9) x = That's not an equation. If there were a number after the 'equals' sign, then we could calculate the value of 'x'. But as it is, there's no question there, so there's nothing to solve.
a equals 5
Equals anything... x is a variable. If that equation was set equal to zero then you could solve for x, but that is not what you have asked.
I think it is 3.14 that equals to pi when u solve it
A 2-step equation that equals 13 could be: 2x + 7 = 13. To solve this equation, first subtract 7 from both sides to isolate the variable: 2x = 6. Then, divide both sides by 2 to solve for x: x = 3. Therefore, when x = 3, the equation 2x + 7 equals 13.