simplify: x^2-49

x^2+x-56
the symbol ( ^ ) means that its the little number above the variable. this is a rational expression.
the choices are as follows:
a. x-7

x+8
b. x+7

x+8
c. x+7

x-8
d. x-7

x-8

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length