Which shows 60^2 - 40^2 being evaluated using the difference of squares method?

(A) 60^2-40^2 = (3600+1600) (3600-1600) = 10,400,000

(B) 6^2-40^2=3600-1600=2,000

(C) 60^2-40^2 = (60-40) ^2=20^2=400

(D) 60^2-40^2 = (60+40) (60-40) = (100) (20) = 2,000

Question

Aryanna

Mathematics

10 January, 13:10

Which shows 60^2 - 40^2 being evaluated using the difference of squares method?

(A) 60^2-40^2 = (3600+1600) (3600-1600) = 10,400,000

(B) 6^2-40^2=3600-1600=2,000

(C) 60^2-40^2 = (60-40) ^2=20^2=400

(D) 60^2-40^2 = (60+40) (60-40) = (100) (20) = 2,000

+5

Answers (1)

Know the Answer?

Cecelia Roy · Answer 1

D. The answer has to be 2,000, eliminating A and C. B doesn't even use the original equation, as well as incorrectly solving the method, so D is the correct answer, even if you don't understand the principles.

Which shows 60^2 - 40^2 being evaluated using the difference of squares method?(A) 60^2-40^2 = (3600+1600) (3600-1600) = 10,400,000(B) 6^2-40^2=3600-1600=2,000(C) 60^2-40^2 = (60-40) ^2=20^2=400(D) 60^2-40^2 = (60+40) (60-40) = (100) (20) = 2,000

Which shows 60^2 - 40^2 being evaluated using the difference of squares method?

(A) 60^2-40^2 = (3600+1600) (3600-1600) = 10,400,000

(B) 6^2-40^2=3600-1600=2,000

(C) 60^2-40^2 = (60-40) ^2=20^2=400

(D) 60^2-40^2 = (60+40) (60-40) = (100) (20) = 2,000