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notka56 [123]
2 years ago
10

Which of the following are solutions to the equation below?

Mathematics
2 answers:
Reptile [31]2 years ago
7 0

Answer:

Option B and D

Step-by-step explanation:

Subtract 9 from both sides :

4x² + 4x - 8 = 0

Divide both sides by 4 :

x² + x - 2 = 0

Factorise using factorisation method :

x² - x + 2x -2 = 0

x(x - 1) +2(x-1) = 0

(x+2)(x-1) = 0

Solve for x

x +2 = 0   OR     x - 1 = 0        

x = -2       OR     x = 1

Answer will be Option B and D

Hope this helped and have a good day

kakasveta [241]2 years ago
7 0

Answer:

option b. –2 and d. 1 are correct.

*For detailed explanation refer to the attachment

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