Question

- 6
simplify each.
(6b - 5c)(6b+ 50)
(13x + 2)(13x - 2)-
(9a4 + 4b)(9a4 - 4b)
(72 + 14) (72 – 14)
AL
my​

Answer 1

Answer:

a) (6b - 5c)(6b+ 50)

6b(6b+ 50)-5c(6b+ 50)

=36b²+300b-30bc-250c

b) (13x + 2)(13x - 2)

(a+b) (a-b) = a²-b² a=13x b=2

= (13x + 2)(13x - 2)= 13x²-2²=169x²-4

c) (9a⁴+ 4b)(9a⁴- 4b)

(a+b) (a-b) = a²-b² a= 9a² b=4b

(9a⁴+ 4b)(9a⁴- 4b)= (3a²)²-(4b) ²=9a⁴-4b²

d) (72 + 14) (72 – 14)

(a+b) (a-b) = a²-b² a= 72 b=14

(72 + 14) (72 – 14)=72²-14²=5184-196=4988

I hope my answer helps you ☺☺

Step-by-step explanation: