Question

Time
How are we able to apply the concept of factorisation by grouping in factorising a
quadratic expression such as 5r? - 12x - 9?​

Answer 1

Step 1: Find two numbers that multiply to give ac (in other words a times c), and add to give b.

Step 2: Rewrite the middle with those numbers:

Step 3: Factor the first two and last two terms separately:

Answer 2

Answer:

hi sorry I am 3 years old