How to Solve SAT Quadratic Equations with Desmos
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How to Solve SAT Quadratic Equations with Desmos
39 просмотров · 3 нед. назад
hiroscore
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39 просмотров · 3 нед. назад
Practice Nonlinear Equations and Systems on HIROSCORE (free, no signup):
https://app.hiroscore.com/start/pract...
Never miss a quadratic on the SAT again.
To solve x² - x - 6 = 0 with Desmos, type the expression x² - x - 6 as one row, then read the x-coordinates where the parabola crosses the x-axis: x = -2 and x = 3.
How to solve a quadratic equation by graphing it in Desmos:
1. Type the expression. Desmos graphs it as y.
2. Click where the parabola crosses the x-axis.
3. Read the x-coordinates. Those are the solutions.
4. Not set to zero? Graph each side as its own row and read where they cross.
Chapters:
00:00 Intro: the problem
00:23 Type the equation into Desmos
00:38 See the curve and its crossings
00:52 Click the crossings and read both solutions
01:11 Zoom in to confirm each one
01:36 Graph both sides when it is not set to zero
01:59 Recap
More step-by-step SAT math practice at HIROSCORE.
#SAT #Desmos #SATMath