Determine the product of each sum and difference of two terms. Write your answers on your answer sheet.
1. (x + 1) (x - 1)
2. (x + 4) (x-4)
3. (x+3) (x-3)
4. (x + 7) (x-7)
5. (x + 9) (x-9)
pa answer
1. (x + 1) (x - 1)
2. (x + 4) (x-4)
3. (x+3) (x-3)
4. (x + 7) (x-7)
5. (x + 9) (x-9)
pa answer
Answers & Comments
Answer:
Step-by-step explanation:
Answer:
1. x^2-1
2. x^2-16
3. x^2-9
4. x^2-49
5. x^2-81
Step-by-step explanation:
1. (x+1) (x-1)
= x^2-x+x-1
= x^2-1
2. (x+4) (x-4)
= x^2-4x+4x-16
= x^2-16
3. (x+3) (x-3)
= x^2-3x+3x-9
= x^2-9
4. (x+7) (x-7)
= x^2-7x+7x-49
= x^2-49
5. (x+9) (x-9)
= x^2-9x+9x-81
= x^2-81
Verified answer
1.x²-2
2.x²-16
3.x²-9
4.x²-49
5.x²-81
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