To divide by a fraction, you multiply by its reciprocal, which you find by flipping the numerator and the denominator. 
Multiply the numerators and the denominators separately. 
Simplify by dividing both sides of the equation by 
. 
5x2 plus 3x =9 which is correct I think
<span>No because a negative times a negative will be positive and it will not equal a negative number. the square root cannot be one negative and one positive because that is against the definition of a square root.
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Since 5=15/3
5^x = (15/3)^x = 15^x / 3^3
Choices A and D
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