Novidomylajviz
Answered

1.
[tex]( \times + 2)( \times + 7)[/tex]
Type:________________________
Solution:


2.
[tex](3 \times - 5)(3 \times + 5[/tex]
Type:__________________________
Solution:
​

Sagot :

HeatherMinatozakiviz

Answer:

1. x^2 + 9x + 14

2. 9x^2 - 25

Step-by-step explanation:

Solution

1. (x + 2)(x + 7)?

= (x + 2)(x + 7)

=(x)(x) + (x)(7) + (2)(x) +(2)(7)

=x^2 + 7x + 2x + 14

= x^2 + 9x + 14

2. (3x - 5)(3x + 5)?

= (3x + -5)(3x + 5)

= (3x)(3x) + (3x)(5) + (-5)(3x) + (-5)(5)

= 9x^2 + 15x - 15x - 25

=9x^2 - 25