Question

5 squared + B squared = 13 squared Solve the equation from part B until you have the squared variable for the missing side length on one side of the equal sign and a rational number on the other.

Answer 1

b = 12

Explanation:

`5^2+b^2=13^2\\25+b^2=169\\`

Subtract 25 from both sides

`25+b^2-25=169-25\\b^2=144`

Square root both sides

`√(b^2)=√(144)\\b=12`

Answer 2

5² + B² = 13²

B² = 13² - 5²

B² = 144 (This is the part where you have the squared variable for the missing side length on one side of the equal sign and a rational number on the other.)

B = 12