Question

Five small square each of sides 1 m are placed on the card sheet of length 5 m long and 4 m wide. What is the area of the card sheet that is uncovered?​

Answer 1

Step-by-step explanation:

Identity (II)

$9 a^{2} - 24ab \: + 16b^{2}$

$(a - b) ^{2}$

$= a^{2} - 2ab + b ^{2}$

$\huge\fbox\pink{Answer}$

$(3a - 4b) (3a - 4b)$

Using identity (II)

$(3a) ^{2} - 2 \times 3a \times 4b + (4b) ^{2}$

$9a^{2} - 24ab + 16b ^{2}$