Question

x square minus y squared is equal to 15 and X + Y is equal to 3 then x minus y is

Answer 1

Answer:

$\red { Value \: of \: x - y }\green {= 5 }$

Step-by-step explanation:

$Given \: x^{2} - y^{2} = 15 \: ---(1)$

$and \: x+y = 3 \: --(2)$

$Now , From \: (1) , (x+y)(x-y) = 15$

$\boxed { \pink { Since , a^{2} - b^{2} = (a+b)(a-b) }}$

$\implies 3(x-y) = 15 \: [From \: (2) ]$

$\implies x-y = \frac{15}{3} = 5$

Therefore.,

$\red { Value \: of \: x - y }\green {= 5 }$

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