Question

Solve x+y=12, x^2+y^2=74
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Answer 1

Answer:

x=7,y=5

Step-by-step explanation:

sobs

(x+y)²=144

x²+y²+2xy=144

we know x²+y²=74

74+2xy=144

2xy=70

xy=35

then x²+y²-2xy =(x-y) ²

74-2(35)=4

(x-y) ²=4

x-y=2