Question 1

(d + 6)(d − 6) =

Accepted Answer

d2 − 36

Answer

d2 − 6

Answer

36 − d2

Answer

6 − d2

Question 2

(4 + a)(a − 4) =

Accepted Answer

a2 − 16

Answer

16 − a2

Answer

−16 − a²

Answer

a2 − 4

Question 3

(−3 − x)(3 − x) =

Accepted Answer

x2 - 9

Answer

−x2 + 9

Answer

9 - x2

Answer

x2 + 9

Question 4

(−5 + w)(−w − 5) =

Accepted Answer

25 − w2

Answer

−25 − w²

Answer

w2 − 25

Answer

25 + w2

Question 5

(9k + 2)(−9k + 2) =

Accepted Answer

4 − 81k²

Answer

4

Answer

-81k²− 4

Answer

81k2 - 4

Question 6

(−2a + 3b)(3b + 2a) =

Accepted Answer

9b²− 4a²

Answer

4a²− 9b²

Answer

3b²− 2a²

Answer

2a²− 3b²

Question 7

$(4x^2+5y^3)(4x^2-5y^3)=$

Accepted Answer

16x⁴− 25y⁶

Answer

16x²− 25y³

Answer

16x⁴− 25y⁹

Answer

25y⁹−16x⁴

Question 8

If (10a − 3)(10a + 3) ≡ 100a² + N, where N is a constant, find N.

Accepted Answer

N = -9

Answer

N = 6

Answer

N = 9

Answer

N = - 6

Question 9

If (Mx − 2)(2 + Mx ) ≡ 121x² - 4, where M is a constant, find M.

Accepted Answer

M = 11

Answer

M = 12

Answer

M = 21

Answer

M = -11

Question 10

If (2x − 1)(−2x − 1) ≡ −4x² + Ax + B, where A and B are constants, find A and B.

Accepted Answer

A = 0, B = 1

Answer

A = 4, B = −1

Answer

A = 4, B = 1

Answer

A = 0, B = −1

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