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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 8 - Mathematics
7.26 Special Products: (a+b)(a2-ab+b2) = a3+b3

Formula : (a+b)(a2-ab+b2) = a3+b3

Find the product (2x+3y)(4x2-6xy+9y2) .
Using above formula, Let a = 2x and b = 3y in the above equation
(a+b)(a2-ab+b2)  = (2x+3y)(4x2-6xy+9y2)
= (2x)3+(3y)3
= 8x3+27y3

Directions: Solve the following problems. Also write at least ten examples of your own.
Q 1: Find the product (2x+y)(4x2-2xy+y2).

Q 2: Find the product (3x+y)(9x2-3xy+y2).

Question 3: This question is available to subscribers only!

Question 4: This question is available to subscribers only!

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