I'll do a) for you, then I will check b) and c) once you have tried them.
a) x^2
= (x)(x) and since x = 6 sub it in and evaluate
= (6)(6)
= 36
Your turn...
If x = 6 and y = −2, find the value of
(a) x²
(b) 5x + y
(c) x + y²
3 answers
28 and 2
-2x-2 =-4