Answer:
C and D
Step-by-step explanation:
Given
(3x - 5)² = 19 ( take the square root of both sides )
3x - 5 = ± ( add 5 to both sides )
3x = ± + 5 ( divide both sides by 3 )
x =
x = → C
x = → D
7th grade math help me pleasee
1 answer:
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Answer:
<h3><u>Part A.</u> 5n</h3><h3><u>Part B.</u> 5n (2n –3) ( n + 2x)</h3>Step-by-step explanation:
<u>A. Ans ; </u>
10n³ – 15 n² + 20 xn² – 30 xn
Factors ; 10 —> 10 , 5 , 2 , 1
Factors ; 5 —> 5 , 1
Factors ; 20 —> 20 , 10 , 5 , 4 , 2 , 1
Factors ; 30 —> 30 , 15 , 10 , 6 , 5 , 3 , 2, 1
The greatest common factor of numbers is ; 5
n³—> n , n , n
n² —> n , n
xn² —> x , n , n
xn —> x , n
The greatest common factor of the variables is ; n
<h3>So ; Greatest common factor : 5n</h3><u>B . Ans ;</u>
I hope I helped you^_^