Question

1. If m=3 and n=2, find 2m² + 3n²-5m²n​

Answer 1

m = 3

n = 2

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2m² + 3n²-5m²n

= 2(3)² + 3(2)²-5(3)²(2)

= 2(9) + 3(4) - 10(9)

= 18 + 12 - 90

= 30 - 90

= -60

Answer 2

Given :-

• m = 3
• n = 2

To find :-

• 2m² + 3n²-5m²n

Solution :-

In the given algebraic expression 2m² + 3n²-5m²n

we substitute m=3 and n=2 as shown below:

So,

⇒ 2m² + 3n²-5m²n

⇒ 2 ( 3 )² + 3 ( 2 )²-5 ( 3 )²( 2 )

⇒ 2 ( 9 ) + 3 ( 4 ) - 10 ( 9 )

⇒ 18 + 12 - 90

⇒ 30 - 90

⇒ -60

Hence -60 is the answer .

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