Question

Binomios al cuadrado(Doy corona)
1. (a-2b)²
2. (5x²+3)²​

Answer 1

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

....

$(5 {x}^{2} + 3 {)}^{2} = (5 {x}^{2} {)}^{2} + 2 \times 5 {x}^{2} \times 3 + {3}^{2} = 25 {x}^{4} + 30 {x}^{2} + 9$