Question

simplify 4y(2y-3) - 5y(6y-3) + 2 for y = -1

pls say​

Answer 1

Answer:

The value of  $4y(2y-3)-5y(6y-3)+2$ for $y=-1$ is $-23$.

Step-by-step explanation:

Given : $4y(2y-3)-5y(6y-3)+2$

To find : The value of given expression for $y=-1$.

Solution :

• The given expression is,  $4y(2y-3)-5y(6y-3)+2$
• We have to find the value of given equation for $y=-1$.
• Now, by solving the above equation, we get

     $4y(2y-3)-5y(6y-3)+2$$= 8y^{2} -12y-30y^{2} +15y+2$  

     (∵ Opening the brackets and multiply each term)

                                         $= -22y^{2} +3y+2$    

           (∵ By adding or subtracting like terms )

• Now, put $y=-1$ in the above equation, we get

                                         $= -22(-1)^{2} +3(-1)+2$

                                         =  $-22-3+2$    

                                         = $-23$

• ∴ The value of  $4y(2y-3)-5y(6y-3)+2$ for $y=-1$ is $-23$.