Math, asked by divyasolanki23, 1 month ago

If 9x^2+25y² = 181 and
xy=-6 find 3x+5y

Answers

Answered by itsmeshivam1098

1

Step-by-step explanation:

9x²+25y² = 181

(3x)²+(5y)² = 181

(3x+5y)²

(3x)²+(5y)²+2(3x)(5y)

181+30xy

181+30×(-6)

181-180

1

then

3x+5y = √1 = 1

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