Question

1 (x+6)(x-6)=
2 (x-11)(x+11)=
3 (2x+1)(2x-1)=
4 (9-x²)(x²+9)=
5 (5-3x)(3x+5)=

ayudenme porfa

Answer 1

1.

$(x + 6)(x - 6) = {x}^{2} - 36$

2.

$(x - 11)(x + 11) = {x}^{2} - 121$

3.

$(2x + 1)(2x - 1) = 4 {x}^{2} - 1$

4.

$(9 - {x}^{2} )( {x}^{2} + 9) = (9 - {x}^{2} )( 9 + {x}^{2} ) = 81 - {x}^{4}$

5.

$(5 - 3x)(3x + 5) = (5 - 3x)(5 + 3x) = 25 - {9x}^{2}$

Propiedad:

$(x - y)(x + y) = {x}^{2} - {y}^{2}$