Question

Solve: 25x2 − 36 = 0.

x = 6, 5
x = −6, −5
x = 36 over 25, x = − 36 over 25
x = 6 over 5, x = − 6 over 5

Answer 1

@Luigi0210

Answer 2

difference of squares \[\huge\rm a^2-b^2=(a+b)(a-b)\]

Answer 3

take square root of both terms
(sqrt of 1st term + sqrt of 2nd term)(sqrt of 1st term - sqrt of 2nd term)

Answer 4

I am lost

Answer 5

here is an example
if i have 4 i can write it as 2^2 power right ? so what number to the 2 power = 25

Answer 6

5

Answer 7

yes right what about 36 ?

Answer 8

6

Answer 9

right so you can write it as \[\huge\rm 5^2x^2-6^2\] which is same as \[\rm a^2-b^2=(a-b)(a+b)\]

Answer 10

a is first term and b is 2nd term
what is a and b in ur equation ?

Answer 11

a=5^2 and b=6^2

Answer 12

not just 5^2
a=5^2x^2
so write it as (a-b)(a+B)

Answer 13

ohh wait

Answer 14

a= 5x
b=6
not squares

Answer 15

difference of squares \[\huge\rm\color{reD}{ a}^2-\color{blue}{b}^2=(\color{Red}{a}+\color{blue}{b})(\color{reD}{a}-\color{blue}{b})\]

Answer 16

well guess what its easy to take square roots