Question

What is the value of the expression 4( x 2 +  xy) − 6 xy at  x = 2 and  y = −3?​

Answer 1

Answer:

Solution

verified

Verified by Toppr

Correct option is C)

4xy(x−y)−6x

2

(y−y

2

)−3y

2

(2x

2

−x)+2xy(x−y)

=4x

2

y−4xy

2

−6x

2

y+6x

2

y

2

−6x

2

y

2

+3xy

2

+2x

2

y−2xy

2

=6x

2

y−6xy

2

−6x

2

y+3xy

2

=−3xy

2

=−3(5)(13)

2

=−2535

Step-by-step explanation:

please mark me as brain list please I have given your answer

Answer 2

Answer:

∴ The value of the expression $4(x^{2} +xy)-6xy$ at $x=2$ and $y=-3$ is $44$.    

Step-by-step explanation:

In context to question asked,

• We have to find the value of the expression $4(x^{2} +xy)-6xy$ at $x=2$ and $y=-3$.
• To find the value of the expression, put $x=2$ and $y=-3$ in the given expression.
• While solving the given expression, first solve the bracket, then addition and subtraction.
• The given expression is,

    $4(x^{2} +xy)-6xy = 4[(2)^{2} +2*(-3)]-6*2(-3)$

                           = $4(8-6)+36$

                           = $4*2+36$

                           = $8+36$

                           = $44$

• ∴ The value of the expression $4(x^{2} +xy)-6xy$ at $x=2$ and $y=-3$ is $44$.