Question

Find the following product using appropriate identities :
( 1 ) ( x + 3) ( x + 3 )
( 2 ) ( x - 3 ) ( x -3 )

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Answer 1

Answer:

(x+2)+1 (x+2)} (x+3)

(x² + 2x + x + 2)(x+3)

= (x² + 3x + 2)(x+8)

x(x² + 3x + 2) + 3 (x²+3x+2) 3x² + 9x +6

x³+3x²+2x + 20² +6x²+ 1100 +6

Step-by-step explanation:

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Answer 2

Hey Mate,

1) solution : By using identity

= ( (x+y) ^2 = x^2+ 2xy+y^2) .

= putting y = 3

= ( x+ 3) (x +3)

= (x + 3) ^2 = x^2+ 2(x) (3) ^2

= x^2+6x+9

2) solution : By using identity

= ( ( x+ a) ( x+ b) = x^2 + (a+b) x + ab) )

= ( x - 3 ) ( x - 3 )

= x^2 + ( -3+5) x + (-3) (5)

= x^2 + 2x - 15

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