Question

Using the identy (x+a)(x+b)=x2+(a+b)x+ab,lets find the product of the following algebric expression. (X+9)(x-6)​

Answer 1

Answer:

Answer

(x+a)(x+b)(x+c)

=[x  

2

+(a+b)x+ab](x+c)

=x  

2

(x+c)+[(a+b)x+ab](x+c)

=x  

3

+x  

2

c+ax  

2

+bx  

2

+acx+bcx+abx+a

=x  

3

+(a+b+c)x  

2

+(ab+bc+ca)x+abc