9x^2-25
yea, it confused me too i need this explained to me pls and you.

What this is is factoring and these are both perfect squares.

(3x-5)(3x+5) is the answer.

Step-by-step explanation:

First we take the 9x^2-25 and split in in two statements

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

then foil to check it

first side: 3x*3x=9x^2

outside: 3x*5=15x

inside: -5*3x=-15x

last: -5*5=-25

then put it together

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

the 15x and -15x cancel each other out so you're left with 9x^2-25

the answer is c

hope this !

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3