Which of the following is equal to (n – 3)2*square* if
Which of the following is equal to (n – 3)2*square* if
n = 11?
Answer/Solution
(n + 5)(n – 7)
Steps/Work
If n = 11, then:
(n – 3)2 = (11 – 3)2 = 82 = 64
Substitute 11 for n into each answer until you find one that equals 64:
(n + 6)(n – 6) = (17)(5) = 85
(n + 5)(n – 7) = (16)(4) = 64 You’ve found a match
correct answer B)(n + 5)(n – 7)
(n – 3)2 = (11 – 3)2 = 82 = 64
Substitute 11 for n into each answer until you find one that equals 64:
(n + 6)(n – 6) = (17)(5) = 85
(n + 5)(n – 7) = (16)(4) = 64 You’ve found a match
correct answer B)(n + 5)(n – 7)