Question

Evaluate the expression 2x² + 3xy + 4y² + 18 for x=2 and y=3. ​

Answer 1

Step-by-step explanation:

What is the value of the expression 2x^2+3xy-4y^2 when x = 2 and y = - 4?

Algebra Expressions with One or More Variables

1 Answer

Nallasivam V

Sep 13, 2015

−

80

Explanation:

2

(

2

)

2

+

[

3

(

2

)

(

−

4

)

]

−

4

(

−

4

)

2

2

(

4

)

+

[

−

24

]

−

4

(

16

)

8

−

24

−

64

=

8

−

88

=

−

8

Answer 2

$\huge\star{\underline{\mathtt{\red{Q}\pink{U}\green{E}\blue{S}\purple{T}\orange{I}\red{O}\pink{N}}}}\star$

Evaluate the expression 2x² + 3xy + 4y² + 18 for x=2 and y=3.

$\huge\star{\underline{\mathtt{\red{A}\pink{N}\green{S}\blue{W}\purple{E}\orange{R}}}}\star$

196

$\huge\star{\underline{\mathtt{\red{E}\pink{X}\green{P}\blue{L}\purple{A}\orange{N}\pink{A}\green{T}\blue{I}\purple{O}\orange{N}}}}\star$

Just substitute the given values in the equation.

2x² + 3xy + 4y² + 18

2x² +4y²+3xy+18

2(2)² +4(3)² +3(2) (3) +18

=196

$\huge\star{\underline{\mathtt{\red{R}\pink{E}\green{M}\blue{A}\purple{R}\orange{K}}}}\star$

Hope this answer will help you.✌️