Question

(x2 - 5x + 7)(x2 +5x +7)

Answer 1

Answer:

USE THE FORMULA (A+B)(A-B)

X^2=A

5X+7=B

ANS=X^4-(5X+7)^2

X^4-25X^2-70X-49

Step-by-step explanation:

Answer 2

Answer:

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