Question

if x =2and y= -2 then find the value of 7x2 -3xy plus 5y2

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Answer 1

Answer:

60

Step-by-step explanation:

x = 2

y = -2

7x²- 3xy + 5y²

=> 7(2)² - (3×2×-2) + 5(-2)²

=> 7×4 + 12 + 5×4

=> 28 + 12 +20

=> 60

Answer 2

Answer:

Question:-

Find the value of 7x²-3xy+5y²

Given:-

x=2

y=-2

Solution:-

we've to substitute the given values

that is

7×(2)²-3×2×(-2)+5×(-2)²

7×4+12+5×4

28+12+20

=60

therefore the correct answer is 60

hope it helps