Q14 of 50 Page 9

Write the following squares of binomials as trinomials:




Apply the identity (a -b)2 = a2 + b2 - 2ab




(ii)


Apply the identity (a -b)2 = a2 + b2 - 2ab




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12

Find the product (3x-5y)(x+y)and verify the result for x=-1, y=-2:

 13

Write the following squares of binomials as trinomials:

(i) (x+2)2 (ii) (8x+3b)2


 15

Using the formula for squaring a binomial, evaluate the following:

(i) (102)2 (ii) (99)2


 16

Simplify the following using the formula: (a-b)(a+b)=a2 -b2

(i) (82)2 -(18)2


(ii) (467)2 -(33)2