Question

find the Square by using suitable identities- (I) (345)²​

Answer 1

Answer:

$(345)^2 =119025$

Step-by-step explanation:

$(a+ b)^2 = a^2 + 2ab + b^2$

$(345)^2\\=(300 + 45)^2\\=(300)^2 + 2 (300)(45) + (45)^2\\= 90000 + 27000 + 2025\\=119025$