Question

j)(2x-3y) ²

k) (5x-4y)²

l)(2a-3xy)²

m)(13-2y)²

Answer 1

j) $(2x-3y)^{2} =4 x^{2} -12xy+9 y^{2}$

k)=$25 x^{2} -40xy+16 y^{2}$

l)=$4 a^{2} -12axy+9 x^{2} y^{2}$

m)=$169-52y+4 y^{2}$

Answer 2

j) =4x²-12xy+9y
k) =25x²-100xy+16y
k) =4a²-12axy+9xy
m) =169²- 338y+4y
am facut direct rezolvarea