Question

Find the value of n which 9720= 45n+15n² ?​

Answer 1

Answer:

n=24

Step-by-step explanation:

Hey friend, Hope the answer helps

9720=45×n+15×n^2

If value of n is substituted=45×24+15×24×24

9720=1080+8640

As L.H.S=R.H.S

So 24 is the value for n

Answer 2

Answer:

n = 24 or - 27

Solution:

Step 1: Simplify both sides of the equation.

9720 = 15n^2 + 45n

Step 2: Subtract 15n^2+45n from both sides.

9720 − (15n^2 + 45n) = 15n^2 + 45n − (15n^2 + 45n)

− 15n^2 − 45n + 9720 = 0


Step 3: Factor left side of equation.

−15(n − 24)(n + 27) = 0

Step 4: Set factors equal to 0.

n − 24 = 0 or

n + 27 = 0


Therefore, n = 24 or n = −27

Hope this will be helpful to you