2-12 Practice
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Posljednje ažuriranje about 3 years ago
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What is (x + 3)(x - 3) in standard form?
What is (7 + x)(x - 7) in standard form?
What is (2x - 5)(2x + 5) in standard form?
What could you add to make this x2 - 6x into a perfect square?
After adding your number, what would the expression be as a perfect square?
What could you add to make this x2 + 2x into a perfect square?
After adding your number, what would the expression be as a perfect square?
What could you add to make this x2 + 14x into a perfect square?
After adding your number, what would the expression be as a perfect square?
What could you add to make this x2 - 4x into a perfect square?
After adding your number, what would the expression be as a perfect square?
What could you add to make this x2 + 24x into a perfect square?
After adding your number, what would the expression be as a perfect square?
What does Mai add to both sides of the equation in between steps 1 and 2?
After step 2, Mai takes the square root of both sides of the equation to get x + 6 on the left. What would she get on the right side of the equation?
Solve: x + 6 = 7
Solve: x + 6 = -7
Match each equation to an equivalent equation with a perfect square on one side.
| Stavka koja se može prevući | arrow_right_alt | Odgovarajuća stavka |
|---|---|---|
x2 - 14 = 5 | arrow_right_alt | (x + 4)2 = 18 |
x2 - 20x = -9 | arrow_right_alt | (x + 5)2 = 12 |
x2 + 10x = -13 | arrow_right_alt | (x - 7)2 = 54 |
x2 + 8x = 2 | arrow_right_alt | (x + 1)2 = 1 |
x2 + 2x = 0 | arrow_right_alt | (x + 2)2 = 9 |
x2 + 4x - 5 = 0 | arrow_right_alt | (x - 10)2 = 91 |
You subtract 5 from both sides to rewrite the equation as x2 - 6x = 7. What should you add to both sides to make a perfect square?
Your new equation is (x - 3)2 = 16. What is one solution to the equation?
Your new equation is (x - 3)2 = 16. What is the other solution to the equation?
Which equation below is equivalent to x2 - 2x = 8?
What is one solution to the equation x2 - 2x = 8?
What is the other solution to the equation x2 - 2x = 8?
Complete the square for the equation: 11 = x2 + 4x - 1. What is one solution to the equation?
Complete the square for the equation: 11 = x2 + 4x - 1. What is the other solution to the equation?
Complete the square for the equation: x2 - 18x + 60 = -21. What is the solution to the equation?
What is (x + 1/8)(x - 1/8) in standard form?
How did rewriting 203 * 197 as (200 + 3)(200 - 3) make it easy to calculate?
Select all the true statements about this situation.