Question

Which of the following is the numerical coefficient of -5xy? *

1 point

5

-x

-5

y

' pqr' is what type of polynomial? *

1 point

monomial

binomial

trinomial

none of the above

(5m + 3n) (5m – 3n) = ___ – ___ = ___ – ___ *

1 point

(5m + 3n) (5m – 3n) = 5(m)² – 3(n)² = 5m² – 3n²

(5m + 3n) (5m – 3n) = 5(m)² – 3(n)² = 25m – 9n

(5m + 3n) (5m – 3n) = (5m)² – (3n)² = 25m² – 9n²

(5m + 3n) (5m – 3n) = 5(m) – 3(n) = 5m – 3n

What is the product of (x + a) and (x + b)? *

1 point



Option 1



Option 2



Option 3



Option 4

Expansion of (x + 3y)(x - y) gives *

1 point

x² + 2xy - 3y²

x + 3y - 2xy

-2y + 3x

3y - 42x

Expand : (7a – 9b)³ *

1 point

343a³ – 1323a²b + 1701ab² + 729b³

343a³ – 1323a²b + 1701ab² – 729b³

343a³ + 1323a²b + 1701ab² + 729b³

343a³ – 1323a²b - 1701ab² – 729b³

Find (68)³ using expansion formula *

1 point

195112

314432

474552

54872

​

Answer 1

Answer:

1- -5

2 -monomial

3-5m^2 - 3n^2

4- (X + a )(X + b ) = X^2+(a+b)x+ ab

5- i

6- ii