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Use the discriminant to determine the type and number of solutions:
Q15: Multiply the radical expressions. <span
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Q81: <span class="ql-formula" data-value="\frac { 2 } {
Q92: Add the polynomials and simplify.
Q123: <span class="ql-formula" data-value="\left( \frac { 3 }
Q128: Simplify the expression. Assume all variables
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Q321: (-24 - 9)(-18 - 5)<br>A)759<br>B)-195<br>C)195<br>D)-759