Question

factorise 4a^2-(b-c)^2​

Answer 1

Expand the square

42−1(−)2

42−1(−)(−)

Distribute

42−1(−)(−)

42−1((−)−(−))

Distribute

42−1((−)−(−))

42−1(2−−(−))

Distribute

42−1(2−−(−))

42−1(2−−+2)

Combine like terms

42−1(2−−+2)

42−1(2−2+2)

Distribute

42−1(2−2+2)

42−12+2−12

Solution

42−12+2−12