Question

x² + 20 =420
4x² - 5 = 95
2x² + 8 = 296
4x+3= 2x+5
3x+1=X+5
x+10=5x+2​

Answer 1

Respuesta:

x² + 20 =420

x^2=420+20

x^2=440

4x² - 5 = 95

x^2=95+5÷4

x^2=100÷4

x^2=25

2x² + 8 = 296

x^2=296-8÷2

x^2=288÷2

x^2=144

4x+3= 2x+5

4•3-5=2x-x

12-5=2x

7=2x

3x+1=X+5

3x-x=5-1

3x=4

x+10=5x+2

10-2=5x-x

8=4x