Question

Please help me! I will fan and medal =D

Answer 1

What is the factored form of x^2 - 196

Answer 2

What is the factored form of 49x^2-56x+16?

Answer 3

Or at least tell me what I could do to solve them please. =D

Answer 4

what is the square root of 196?

Answer 5

14

Answer 6

what you have here is the difference of 2 squares x^2 and 196 are perfect squares

Answer 7

Oh

Answer 8

ok the general form is

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

so plug in a = x and b = 14 and you have it.

Answer 9

that general form is worth committing to memory.

Answer 10

(x+14)(x−14)

Answer 11

Thanks can you help me with the second one please? =D

Answer 12

Ok
this one is a perfect square
note that 49x^2 and + 16 are both perfect squares but this is not a difference

can you figure it out /

Answer 13

both factors are the saME.

Answer 14

- BUT on expansion they produce a middle term + 56x.