<h2>Algebra Examples</h2><h2>Popular Problems Algebra Solve Using the Quadratic Formula r^2-8r=0</h2><h2>r</h2><h2>2</h2><h2>−</h2><h2>8</h2><h2>r</h2><h2>=</h2><h2>0</h2><h2>r2-8r=0</h2><h2>Use the quadratic formula to find the solutions.</h2><h2>−</h2><h2>b</h2><h2>±</h2><h2>√</h2><h2>b</h2><h2>2</h2><h2>−</h2><h2>4</h2><h2>(</h2><h2>a</h2><h2>c</h2><h2>)</h2><h2>2</h2><h2>a</h2><h2>-b±b2-4(ac)2a</h2><h2>Substitute the values </h2><h2>a</h2><h2>=</h2><h2>1</h2><h2>a=1, </h2><h2>b</h2><h2>=</h2><h2>−</h2><h2>8</h2><h2>b=-8, and </h2><h2>c</h2><h2>=</h2><h2>0</h2><h2>c=0 into the quadratic formula and solve for </h2><h2>r</h2><h2>r.</h2><h2>8</h2><h2>±</h2><h2>√</h2><h2>(</h2><h2>−</h2><h2>8</h2><h2>)</h2><h2>2</h2><h2>−</h2><h2>4</h2><h2>⋅</h2><h2>(</h2><h2>1</h2><h2>⋅</h2><h2>0</h2><h2>)</h2><h2>2</h2><h2>⋅</h2><h2>1</h2><h2>8±(-8)2-4⋅(1⋅0)2⋅1</h2><h2>Simplify.</h2><h2>Tap for more steps...</h2><h2>r</h2><h2>=</h2><h2>4</h2><h2>±</h2><h2>4</h2><h2>r=4±4</h2>
