What is the discriminant of 3x^2-8x+5=5x^2
1 answer:
Move all terms to the left side of the equation and simplify. <span><span><span><span><span><span>−2</span><span>x2</span></span><span><span>−8</span>x</span></span>+5</span>=0</span><span><span><span><span><span>-2</span><span>x2</span></span><span><span>-8</span>x</span></span>+5</span>=0 </span></span>The discriminant of a quadratic is the expression inside the radical of the quadratic formula. <span><span><span>b2</span><span><span>−4</span><span>(<span>ac</span>)</span></span></span><span><span>b2</span><span><span>-4</span><span>ac </span></span></span></span>Substitute in the values of <span>aa</span>, <span>bb</span>, and <span>cc</span>. <span><span><span><span>(<span>−8</span>)</span>2</span><span><span>−4</span><span>(<span><span>−2</span>⋅5</span>)</span></span></span><span><span><span>-8</span>2</span><span><span>-4</span><span><span>-2</span>⋅5 </span></span></span></span>Evaluate the result to find the discriminant.\ <span>104</span>
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The answer should be -3 Hope this helps :)
Maybe u should try a graph
Answer:
Your answer is 2.5
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He answered 41 questions right. 41:50
Substitution is best to use one one or both equations is already solved for one of the variables. Elimitation can be use if all variables have a coefficient other than 1.