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Algebra 2 questions. 10 points to best answer?

0 votes
9. 9y2 + 16=0
A. no solution
B. 4/3
C. -4/3
D. {-4/3, 4/3}
E. 16/9
F. -1

10. [CUBERT(2x + 9)]=3
A. -3
B. no solution
C. 0
D. 9
E. -3/2
F. -9/2

11. [SQRT(2x2 + 6x + 4)] = x + 1
A. 1
B. {-3, -1}
C. {-3/2, -1}
D. no solution
E. -1
F. -3
asked Jul 18, 2013 in ALGEBRA 2 by anonymous Apprentice

1 Answer

0 votes

1)Given that

image

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The obtained y value is not there in any option

Hence the answer is option ( A )

2) Given that

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Cubing on bothsides

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image

image

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Therefore the answer is option ( D )

3) Given that

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Squaring on bothsides

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image

image

image

image

image

image

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Therefore x = {-3 , -1}

The answer is option ( B )

 

answered Jul 18, 2013 by jouis Apprentice

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