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MAYANG25SOLANOIN
Answered

PRACTICE TASK 1 A. Find the product using the FOIL method 1. (x + 3)(x - 3) 7:2 -3x +3x -9 x² – 9 - 2. (x + 7)(x - 7) 3. (x - 2)(x + 2) - 4. (x – 5)(x + 5) - 5. (x + 9) (x – 9)


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Sagot :

EMSMNHN23IN

Answer:

1. (x+3)(x-3)

x²-3x+3x-9

=x²-9

2. (x+7)(x-7)

x²-7x+7x-49

=x²-49

3. (x-2)(x+2)

x²+2x-2x-4

=x²-4

4. (x-5)(x+5)

x²+5x-5x-25

=x²-25

5. (x+9)(x-9)

x²-9x+9x-81

=x²-81

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