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Arada [10]
3 years ago
9

Identify the solutions to the quadratic equation. Check all that apply. x2 + 4x - 21 = 0

Mathematics
2 answers:
Vika [28.1K]3 years ago
8 0

Answer:

C and D

Step-by-step explanation:

(X-3)(X+7)=0

X-3=0   X+7=0

X=3  X=-7

soldier1979 [14.2K]3 years ago
5 0

Answer:

6, -7 ; C and D

Step-by-step explanation:

(-4 +/- √16+84)/2=x

(-4 +/- 10)/2=x

x=6/2=3, or x=-14/2= -7

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How do you solve this?<br> 5x-4y+6x<br> if x=8
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