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Answered

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Expand each of the following expression algebraic identities:
a) (7x+9)²
b) (1-3x)²
c) (5x+8) (5x-8)

Sagot :

Sandlanasandlana839idn

Answer:

a)49x^2+126x+81

b)3x^2-6x+1

c)25x^2-64

Step-by-step explanation:

a)(7x+9)(7x+9)

49x^2+63x+63x+81

49x^2+126x+81

b)(1-3x)(1-3x)

3x^2-3x-3x+1

3x^2-6x+1

c)(5x+8)(5x-8)

25x^2-40x+40x-64

25x^2-64

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