For this case we have the following system of equations:

Equating both equations we have:

We must find the solutions, for this we factor. We look for two numbers that, when multiplied, result in 4 and when added, result in 5. These numbers are 4 and 1:

Then, the factorized equation is of the form:

Thus, the solutions are:

We look for solutions for the variable "y":

Thus, the system solutions are given by:
ANswer:

Answer:
20
Step-by-step explanation:
4/7 x 35 = 4 x 5
Answer:
Thr answer is B.
Step-by-step explanation:
x-1^2 = x^2 - 2x +1
Using forming a square shape via formaticals, yes.