Question

8. Find the value of :
5x2 - 6xy + y2 when x = 2, y = 10.​

Answer 1

Answer:

-80

Step-by-step explanation:

$5x2 - 6xy + 42 \\ here \: given \: x = 2 \: and \: y = 10 \\ so \: we \: get \: \\( 5 \times 2 \times 2) - (6 \times 2 \times 10) + (10 \times 2) \\ (10 \times 2) - (60 \times 2) + 20 \\ = 20 - 120 + 20 \\ = - 80$

Hope it will help you...

Answer 2

Answer:

320

Step-by-step explanation:

5x²-6xy+y²

5(2)²-6(2)²(10)+(10)²

(5×4)-(6×4×10)+100

20-240+100

220+100

320