Question

alguien me ayuda porfa​

Answer 1

$\frac{8 {x}^{2} + 3}{5} = 15 \\ 8 {x}^{2} + 3 = 15 \times 5 \\ 8 {x}^{2} + 3 = 75 \\ 8 {x}^{2} = 75 - 3 \\ 8 {x}^{2} = 72 \\ {x}^{2} = \frac{72}{8} \\ {x}^{2} = 9 \\ x = \sqrt{9} \\ x = 3$

Answer 2

Respuesta:

8x

2

+3

=15

8x

2

+3=15×5

8x

2

+3=75

8x

2

=75−3

8x

2

=72

x

2

=

8

72

x

2

=9

x=

9

x=3