Using the quadratic formula to solve 2
4x - 7. what are the values of x2

x=

Step-by-step explanation:

Here is the correct question: Using the quadratic formula to solve

x²+4x - 7. what are the values of x.

Solving by using quadratic formula.

Formula:

∴  In the expression , we have a= 1, b= 4 and c= -7.

Now, subtituting the value in the formula.

=

=

Opening parenthesis.

=

=

We know 2²=4

=              

we know √a²=a

=

Taking 2 as common in the expression.

=

Cancelling 2

=

Hence we get,

7

step-by-step explanation:

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13