Which of the following are solutions to the quadratic equation? Check all that apply.
2x2 + 5x -10 = x2 + 4

x = 2 or x= -7

Step-by-step explanation:

We can use factorisation to solve this.

First, we shift all the variables to one side (see attachement)

Then, we need to find the value of x, which multiples to give -14 and adds together to give 5.

7 - 2 = 5

and 7 x (-2) = -14.

Now we factorize (group into brackets) to find the values of x.

We solve for x to find the final answer.

answer: the area of the parallelogram below is 42 square meters.

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