Multiplication of Monomial by Binomial

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In Multiplication of Monomial by Binomial,monomial means single number and Binomial has two terms.

For solving this multiplication use the following steps:

1) Monomial is outside the parenthesis (bracket).
2) Binomial is inside the parenthesis.
3) Use a distributive property to open the parenthesis.
4) Distributive property ---> Multiply each term of the parenthesis by the monomial keeping the addition or subtraction sign same.

Examples :

1) Multiply : 3x(x + 4)

Solution :
As 3x is outside the parenthesis, multiply x and 4 by 3x
3x(x + 4) = 3x . x + 3x . 4
= 3x1 + 1 + 12x
= 3x2 + 12x

2) Multiply : 4x2y3 (3x2y2 - 2xy)

Solution :
4x2y3 (3x2y2 - 2xy)
= 4x2y3. 3x2y2 - 4x2y3. 2xy
= 12x4y5 - 8x3y4

3) Multiply : -2xy (x2y - 4x)

Solution :
-2xy (x2y - 4x)
= -2xy . x2 + 2xy . 4x
= -2x3y2 + 8x2y

4) Multiply : 3ab(a2b - ab2)

Solution :
3ab(a2b - ab2)
= 3ab .a2b - 3ab . ab2
= 3a3b2 - 3a2b3
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Practice

1) -4ab(2a2 + 5ab)
2) 3x(4y2 - x3)
3) -2(a2 + 2b2)
4) 2/3(6x2 + 9y)
5) -1/2(12x2 - 18y2)

Multiplication of algebraic expressions

Multiplication of Monomial by Binomial
Multiplication of Binomial by Binomial
Multiplication of Polynomial by Monomial
Multiplication of Polynomial by Binomial


Algebraic Expressions page

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