Question

ayudame porfas
es urgente​

Answer 1

Verified answer

Respuesta:

Explicación paso a paso:

1.

(5a + 3b) (2a + 7b)

5a x 2a +5a x 7b + 3b x 2a + 3b x 7b

10[tex]a^{2}[/tex] + 35ab + 6ab + 21[tex]b^{2}[/tex]

=10[tex]a^{2}[/tex] + 41ab + 21[tex]b^{2}[/tex]

2.

(6a + 5b) (3a + 2b)

6a x 3a + 6a x 2b + 5b x 3a + 5b x 2b

18[tex]a^{2}[/tex] + 12ab + 15ab + 10[tex]b^{2}[/tex]

=18[tex]a^{2}[/tex]+27ab +10 [tex]b^{2}[/tex]

3.

(4a + 7b) (-2a -3b)

-4a x 2a - 4a x 3b - 7b x 2a - 7b x 3b

-8[tex]a^{2}[/tex]- 12ab - 14ab - 21[tex]b^{2}[/tex]

= -8[tex]a^{2}[/tex] - 26ab -21[tex]b^{2}[/tex]