If x+y = 8 and x-y = 2,find the value of x² - y²
Answers
Answered by
3
Answer:
x^2-y^2=(x+y)(x-y)
=8×2
=16.
Step-by-step explanation:
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Answered by
0
Step-by-step explanation:
x+y=8 equation 1
x-y=2 equation 2
add
2x=10
x=5 equation 3
equation 3 in 1
y=3 equation 4
x^2-y^2
=25-9
=16
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