Question

If 3x+5x=6 and xy=-2,find the value of 9x²+25y²

can anyone solve it right now for me pls
don't spam just solve it if u can ​

Answer 1

Correct Question:

If 3x + 5y = 6 and xy = -2, find the value of 9x² + 25y²

Answer:

The required value of 9x² + 25y² is 96.

Step-by-step explanation:

Given :

3x + 5y = 6 and xy = -2

To find :

the value of 9x² + 25y²

Solution :

We know,

(a + b)² = a² + b² + 2ab

Put

• a = 3x
• b = 5y

(3x + 5y)² = (3x)² + (5y)² + 2(3x)(5y)

⇒ 6² = 9x² + 25y² + 30xy

⇒ 36 = 9x² + 25y² + 30(-2)

⇒ 36 = 9x² + 25y² - 60

⇒ 9x² + 25y² = 36 + 60

⇒ 9x² + 25y² = 96

∴ The required value of 9x² + 25y² is 96.

Answer 2

plz refer to above attachment

ur question is wrong

it must be 3x + 5y = 6

and I have given answer according to it