Please help me multiply.?

Question

(x-8/3)(x+8/3)

Answer 1

x2-64/9

Answer 2

this question is using specific formula act.

eg :

(a+b)(a-b) = (a+b)^2

thus...

(x-8/3)(x+8/3)

= (x-8/3)^2

Answer 3

its called the FOIL technique or Expanding.

first, (x * x) then (x * 8/3)

secondly, (-8/3 * x) then (-8/3 * 8/3)

so you put everything together...

(x^2 + 8/3x - 8/3x - 64/9)

then you simplify a but more to your final answer which is..

(x^2 - 64/9)      {because the +8/3 and -8/3 cancle out)

(x-8/3)(x+8/3) is known as a difference of squares equation

Answer 4

x^2-8/3x+8/3x-64/9

x^2-64/9

Answer 5

(x-a) (x+a) = x^2 - a^2

(x-8/3)(x+8/3)

= x^2 - (8/3)^2

= x^2 - 64/9