Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Module 16
Solving Quadratic Equations by Completing the Square
| Question | Answer |
|---|---|
| Solve for X X^2=121 | 11,-11 or ±11 |
| Solve For X (x+5)^2=36 | 1,-11 get the square root of both sides to get a positive and negative version of each problem then set=x |
| Solve for X X^2-5=0 | ±√ 5 or -5,5 |
| Add the proper Constant to create a perfect square trinomial x^2+21x+____ | The constant term is 110.25 Take half of the coefficient of the x-term and square it. |
| Factor the Trinomial x^2+21x+110.25 | (x+10.5)^2 Take half of the coefficient of the x term and get the square of half the coefficient and x. |
| Solve for X X^2+18X=-17 | X=-17,-1 |
| Find The interest Rate that Makes $200,000 grow to $208,080 in 2 years | The interest rate is 2% Use the Formula A=P(1+r)^t to solve. Substitute the amount before interest as P. The Years for t and the Amount after Interest for A. |
| How long would it take an object to fall from a 875 ft building, neglecting air resistance? Use s(t)=16t^2 | 7.40 seconds Substitute the height of the building for s to get 875t=16t^2 |
| Add a Constant to make the Binomial a Perfect Square Trinomial n^2-6n+___ | The Constant term to add is 9 Take half of the coefficient of the x-term and square it. |
| Solve the Equation by completing the Square y^2+2y+26=0 | Y= -1±5i Subtract 26 from both sides find the constant, using 1/2 2 squared = 1 y^2+2y+1=-25 Factor the perfect square (y+1)^2=-25 get the square root y+1=±√ -25 Minus 1 y=-1±√ -25 Also remember that i should be used in place of √-1 |
Created by:
sydneyorman
Popular Math sets