Question

If x³-y³=37 and x²+y²=25, find x and y. Need solution

Answer 1

Answers

ambar21

ambar21 Virtuoso

(x+y)=√(x+y)^2

=√(x^2+y^2+2xy)

=√(37+12)

=√49

x+y=7

(x-y)=√(x-y) ^2

=√(x^2+y^2-2xy)

=√(37-12)

=√25

x-y=25

Answer 2

Answer:

x³-y³-3x²y-3xy²=37. x²+y²=25

x+y=√25 x³-y³-3xy(x+y)=37. x+y=5

x³-y³-3xy(5)=37. cubing both side

x³-y³-15xy=37. x³+y³=5³

x³+y³=125

SORRY THIS SUM IS SO DIFFICULT FOR ME...