Step-by-step explanation:
c² = a² + b²
a = 9 , b = 40
Substitute the values of a and b into the equation and solve
That's
We have the final answer as
Hope this helps you
-14
step-by-step explanation:
2x2 – 2(x+4)
=2x2-2(5+4)
=4-2×9
=4-18
=-14