They are right except for 12. i think it is C but i could be wrong.
Answer:
9x^4-25x^2+16
Step-by-step explanation:
(x^2−1)(3x−4)(3x+4)=(*)
(x^2−1)((3x)^2−4^2) =
(x^2 - 1)(9x^2-16)=
x^2*9x^2 - x^2*16 - 1*9x^2 +16=
9x^4-16x^2-9x^2+16=
9x^4-25x^2+16
(*) (A-B)(A+B) =A^2 - B^2
Answer:
a,b
Step-by-step explanation:
Answer:
great..:)
Are u a motivational speaker??
Answer:
C. x=18 is the answer
Step-by-step explanation:
X2 = 36
x = 36÷2
x = 18
