x^2=45 I need help please?

x^2 = 45
x = ±√45 (+/-√45)
x = ±√(9^2 * 5)
x = ±√(9^2) * √5
x = ±3 * √5
x = ±3√5

x² = 45
x² = 9(5)
x = (√9)(√5)
x = 3√5
x = +/- 3√5 OR +/- 3(2.236068)

Answer: x = +/- 3√5 OR +/- 3(2.236068)

x^2=3\/'''5'''
x=+& - 6.708 both are acceptable.

x^2 = 45
x^2 = 9x5
take the squaroot of both sides

x = (sqrt9 )(sqrt5)

x = + - 3 sqrt (5) *****Answer

x = ±3√5

x ² = 45

x ² = ( 9 ) ( 5 )

x = 3√5

x=+6.708,x=-6.708
x=6708/1000, x=-6708/1000
x=1677/250, x=-1677/250

x^2 = 45
x^2 - 45 = 0 ... (subtract 45 for both sides)
x^2 - (3√5)^2 = 0 ...[since 45 = (3√5)^2 ]

(x + 3√5)(x - 3√5) = 0 ....[factor a^ - b^2 = (a + b)(a - b)]

*** x + 3√5 = 0 ==> x = -3√5
**** x - 3√5 = 0 ==> x = + 3√5

The answers are: x = -3√5 or x = +3√5

Good Luck!

x^2=45
x=±√45=±√9×√5
=±3√5
Since √5 is an irrational number, it cannot be converted to a fraction, because every fraction is a rational number

Square root of 45 is the same as the square root of (5x9)

So we take the square root of both numbers, giving us √5 x 3

so x = +/- 3√5.

The +/- means positive or negative, because when you square root a number you get 2 solutions that are negatives of each other.