- If 2x + 2y = 2 x − 2^1 y , then x^2 − y^2 =
A (^18)
B (^14)
C (^12)
D 1
E 2
For this question, write your answer in the box.
- If a^2 + 8a + k = (a − 10)(a + 18), then what is the value of k?
- If y^2 + ky + b = (y − z)(y + q), then what is b, in terms of q and z?
A q + z
B q – z
C qz
D – qz
E q/z - If (√a − √b)(√a + √b) = 12, then what is a in terms of b?
A b + 12
B b^2 + 12
C √b + 12
D √b + √ 12
E √b – √ 12
288 PART 4 ■ MATH REVIEW03-GRE-Test-2018_173-312.indd 288 12/05/17 11:55 am