To add integers with different signs, you subtract the lesser absolute value from the greater absolute value and use the
sign of the integer with the greater absolute value. Make a conjecture
about adding any two rational numbers that have different signs.
Explain using parts and B

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus

what chart am i supposed to follow?