Sometimes you are given numbers expressed as a product of prime factors. For example, 8 = 2 3 and 90 = 2 × 3 2 × 5. If you want to find the LCM and HCF in an exam, we can use prime factor form to ...

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 ...