Danielateodoraloronoviz
Answered

hmmm! what is the solution of

2. 28= r (r+3)_____?
3. 3s (s-2) =12s____?
4. (×+2) (×+13) = 0____? huhuhu hanghirap ;(

Sagot :

Angelrosemaxilumviz

Answer:

2.121

3.324

4.x2+15x+26

Step-by-step explanation:

auto correction thank you

Sorrow477447viz

Answer:

2. r=4, r=-7

3. s=0, s=6

4. x=-2, x=-13

Step-by-step explanation:

2. 28=r(r+3)

28=r²+3r

r²+3r-28=0

(r-4)(r+7)=0

r-4=0, r+7=0

r=4, r=-7

3. 3s(s-2)=12s

3s²-6s=12s

3s²-18s=0

3s(s-6)=0

3s=0, s-6=0

s=0, s=6

4.(x+2)(x+13)=0

x+2=0, x+13=0

x=-2, x=-13