Question

Resolver los productos notables
(x - 5)(x-4).
(3x+2)(3x-2).
(4a-3b)a la 2.
(a+3)al cuadrado.
(m-n)al cuadrado.
(3a+4b) elevado a la 2.​

Answer 1

2. $(x - 5)(x - 4) \\ {x}^{2} - 4x - 5x + 20 \\ {x}^{2} - 9x + 20$
3. $(3x + 2)(3x - 2) \\ ( {3x})^{2} - ( {2})^{2} \\ 9 {x}^{2} - 4$
4. $(4a - 3b)^{2} \\ (4a)^{2} - 24ab + ( {3b})^{2} \\ 16 {a}^{2} - 24ab + 9 {b}^{2}$
5. $(a + 3)^{2} \\ {a}^{2} + 6a + 9$
6. $(m - n)^{2} \\ {m}^{2} - 2mn + {n}^{2}$
7. $( 3a + 4b)^{2} \\9 {a}^{2} + 24ab + 16 {b}^{2}$