Please help mee plz...solving quadratics

equation: x^2+12x-220 = 0

factored form: (x-10)(x+22) = 0

solution: x=10 or x=-22

dimensions: 4 cm, 11 cm, and 21 cm.

Step-by-step explanation:

Given:

Volume = 924

dimensions of cuboid = 4, (x+1), (x+11)

Solution

Calculate volume

4(x+1)(x+11) = 924

simplify

(x+1)(x+11) = 231

Expand

x^2+12x+11 = 231

Simplify

x^2+12x-220 = 0

Factor  

x^2-10x + 22x -220 = 0

x(x-10) + 22(x-10) = 0

(x-10)(x+22) = 0

x=10 or x=-22

Since x=-22 will give rise to negative dimensions, root will be rejected.

For x=10, the dimensions can be obtained by substituting x=10

x+1 = 11

x+11 = 21

So dimensions are

4 cm, 11 cm, and 21 cm.

Check: 4*11*21 = 924 checks.

answer: i guess 5 units?

step-by-step explanation:

the answer is (-4,-4)

hope this ! : d