Evaluate a–4b2 for a = –2 and b = 4.
To evaluate a–4b^2 for a = –2 and b = 4, we substitute these values into the expression:
a - 4b^2
= -2 - 4(4)^2
= -2 - 4(16)
= -2 - 64
= -66
Therefore, a–4b^2 = -66 when a = –2 and b = 4.
a - 4b^2
= -2 - 4(4)^2
= -2 - 4(16)
= -2 - 64
= -66
Therefore, a–4b^2 = -66 when a = –2 and b = 4.