Algebra Practice Problems
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1. Solve. 2x / 5 = -10
2. The sum of an integer and its square is 12. Find the number
3. Solve. 4(7x + 10) = 3(9x - 5) + 20
4. Simplify ( 3x - 6y)2
5. The product of two consecutive numbers is 30. Find the smaller of the numbers.
6. Subtract 4x2 - 5x from the sum of 9 x2 -2 and 6x - 1.
7. A pair of cuff links was marked up $225 from cost, which amounts to a 50% increase. Find the original cost of the pair of cuff links.
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Solution Summary
Step-by-step solutions to all the given integer questions.
Solution Preview
(1) 2x/5 = -10
2x = -10 * 5 = -50
x = -50/2 = -25
(2) Let the integer be x. Its square is 2x.
By data, x + x^2 = 12
x^2 + x - 12 = 0
(x + 4)(x - 3) = 0
x = {-4, 3}
The integer is -4 or ...
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