Question

using suitable identity find (7x-3y)^2​

Answer 1

Answer:

l hope this is helpful for you

Answer 2

Answer:

$(7x - 3y) ^{2} \\ \\ = {(7x)}^{2} - 2 \times 7x \times 3y + {(3y) }^{2} \\ \\ = 49x ^{2} - 42xy + 9 {y}^{2} \\ \\ formula \: used \\ \\ (a - b) ^{2} \\ \\ = {a}^{2} - 2ab + {b}^{2}$

hope it helps uH :)