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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 7 - Mathematics
4.35 Multiplication of a Multinomial by a Monomial (Horizontal Method)

To multiply a mutlinomial by a monomial:
Method:
  • Multiply each term of the multinomial by the monomial
  • Write the products with the proper sign.

Example:
Multiply 5x2+6x-7 and 7x
Solution:
(5x2+6x-7)7x = (5x2)(7x)+(6x)(7x)-(7)(7x) (Distributive Property)
= 35x3+42x2-49x
Directions: Solve the following problems. Also write at least ten examples of your own.
Q 1: (6x2+7x-5)(5x) = _____?
30x3+35x2+25x
30x3+35x2-25x
11x3+14x2+25x
30x3-35x2+20x

Q 2: (5x3+9x2-15x-5)(15x) = _____?
75x3+125x2-125x-50
75x3+135x2-225x-75
75x4+135x3-225x2-75x
25x3+15x2-25x-175

Q 3: (9x2+7x-5)(3x) = _____?
183-21x2+10x
273+21x2+5x
273+21x2-15x
273-21x2+15x

Q 4: (9x2+7x+9)(8x) = _____?
72x3+49x2+64x
72x3+56x2+72x
68x3+56x2+72x
72x2+56x+72

Q 5: (5x3+7x2+9x-5)(10x) = _____?
50x2+90x-50
50x3+70x2+90x-50
10x3+70x2-90x-50
50x4+70x3+90x2-50x

Q 6: (7x2-9x-5)(4x) = _____?
28x3-36x2+20x
28x3-36x2-20x
11x3-16x2+25x
12x3-36x2+20x

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Question 8: This question is available to subscribers only!


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