Mathematics Knowledge第 57 / 120 题
If a = 3 and b = -2, what is the value of a squared minus b?
a.11
b.7
c.5
d.-11
解析
First, a squared is 3 times 3, which equals 9. Subtracting b, which is negative 2, means adding 2, giving 9 plus 2, or 11.
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