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How do you solve for x in the following problem X2 over 30 equals x over 15 plus 1 over 2 the first 2 is an exponent?
Wiki User
∙ 14y ago
multiply the equation by 30 giving x^2 = 2x + 15or x^2 - 2x -15 = 0.
This factorises to (x - 5)(x + 3) giving solutions of 5 and -3.
Check it 25/30 = 5/15 + 1/2 ie 25/30 = 10/30 + 15/30.
and 9/30 = -3/15 + 1/2 ie 9/30 = -6/30 + 15/30
Both check out!
Wiki User
∙ 14y ago
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Display the following equation in your page -344x plus 54x3 plus 62x2 plus 2x0 equals 0?
most commonly you would place the highest exponent first. x0 = 1. 54x3 + 62x2 - 344x + 2 = 0
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Display the following equation in your page -344x plus 54x3 plus 62x2 plus 2x0 equals 0?
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j.s.mill
What is the first number called in a subtracion problem?
In subtraction, the minuend minus the subtrahend equals the difference.
Do negative exponent not mean to make the base number negative?
No, there is a big difference between 2^(-4) and (-2)^4 The first is 1/16 and the second is 16. A negative exponent is the reciprocal of a positive exponent. a^b is going to be 1/ (a^(-b)), Similarly, (a^b)*(a^(-b))=1 for two reasons. First multiplying reciprocals cancels them out. Second, when you multiply the same base you add the exponents, so (a^b)*(a^(-b)) = a^0 which equals 1◄
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