katsutoshi14
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Sagot :

CrazyBun
Answer:

1. A
2. II
3. A
4. C
5. A

Answer:

1. Except B

2. C

3. A

4. C

5. A

Step-by-step explanation:

1. x^2-5-x^2-2x-5=0

x^2 - x^2 = 0

2. Factoring, completing the square or quadratic formula

3. x^2+10x+20+5=0

x^2+10x+25 = (x+5)(x+5)

x = -5 (A)

4. (x+2)^2 =2(x+6)

x^2 +4x +4 = 2x + 12

x^2+4x+4-2x-12=0

x2+2x-8=0

(x-2)(x+4)

x + 4 = 0. x = -4. (C)

5. (x+8)(x+5)=x+4

x^2+5x+8x+40-x-4=0

x^2+12x+36=0

(x+6)^2 = 0

(x+6)(x+6)

x = -6. (A)

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