Math, asked by shakuntalanimbalkar1, 5 months ago

Find the value of 25x2 + 9y2 – 20xy at x = - 1 and y = 1

Answers

Answered by srujanayanraj1411

1

Answer:

-12

Step-by-step explanation:

25x2 + 9y2 - 20xy

Given: x=-1 ; y=1

⇒25(-1)2 + 9(1)2 - 20(-1)(1)

⇒ -50 + 18 + 20

⇒ -50 + 38

⇒ -12

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