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Online Quiz (Worksheet A B C D)

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MEAP Preparation - Grade 7 Mathematics
2.84 Multiplication of two Binomials

Example: (7x+9y).(6x+7y) = _____ ?
Solution:
7x(6x+7y)+9y(6x+7y)
= 7x.6x+7x.7y+9y.6x+9y.7y
= (7.6)(x.x)+(7.7)(x.y)+(9.6)(y.x)+(9.7)(y.y)
= 42x2+49xy+54xy+63y2

In above expression, 49xy and 54xy are like-terms, so we can add them.
Therefore, the answer is: 42x2+103xy+63y2


Directions: Solve the following multiplication problems. Also write at least 10 examples of your own.
Q 1: (2x+9y)(3x+4y) = _______ ?
6x2+36y2+35xy2
6x2+36y2+35xy
6x2+36y2+36xy
6x2+36y3+35xy

Q 2: (x+2y)(x+3y) = ______ ?
x2+8y2+5xy
x2+6y2+5xy
105x2+14y2+79xy
x2+6y2+15xy

Q 3: (3x+6y)(x+2y) = ______ ?
3x2+12y2+14xy
3x2+12y2+10xy
3x2+10y2+12xy
3x2+12y2+12xy

Q 4: (4x+6y)(3x+2y) = ______ ?
12x2+12y2+28xy
3x2+12y2+12xy
12x2+12y2+26xy
12x2+12y2+24xy

Q 5: (7x+2y)(15x+7y) = _____ ?
105x2+14y2+79xy
105x2+24y2+79xy
5x2+7y2+12xy
105x2+14y2+70xy

Q 6: (x+6y)(3x+2y) = ______ ?
3x2+14y2+14xy
3x2+12y2+12xy
3x2+12y2+20xy
3x2+12y2+12xyz

Q 7: (5x+7y)(x+y) = ______ ?
12x2+12y2+26xy
5x2+7y2+10xy
5x2+7y2+12xy
5x2+7y3+12xy

Q 8: (7x+6y)(6x+3y) = _______ ?
42x2+18y+57x2y
42x2+21y2+57xy
42x2+18y2+57xy
42x2+18y2+57xz

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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