Question

calcule o valor de x na figura

Answer 1

x+1+x+3=90
2x=4-90
2x+86
x=86\2
x=43

Answer 2

Pitágoras :
a ² = b ² + c ²
(x+1) ² = x ²+ 3 ²
x ² + 2x + 1 = x ² + 9
x ² - x ² + 2x = 9-1
2x= 8
x= 8 /2
x=4