Question

If x² - y² = 55, and x - y = 11, then y =?

A. 8
B. 5
C. 3
D. -8
E. -3

Answer 1

b cause only 5 times 11 will equal 55

Answer 2

The answer is not b. The correct answer is E.

Answer 3

this ^

Answer 4

wrong that would equal -33 its b

Answer 5

x² - y² = (x - y)(x + y) = 11( x + y) = 55
therefore x + y = 5
x + y = 5
x - y = 11

subtracting:
2y = 16
y = 8

Answer 6

A is correct

Answer 7

lol everone was wrong

Answer 8

E. -3 is the correct answer