If the discriminant (b² - 4ac) is negative, the roots are complex numbers. Complex roots always come in conjugate pairs (a + ...
When the expression has no constants, the highest common factor (HCF) of the coefficients is found. The expression has no constants. The HCF of the coefficients is the greatest factor that is common ...
Dividing rational expressions is very similar to multiplying, with one extra step: invert and multiply. This means you flip ...
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