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IN THE EQUATION (ax - 2)² = 100, a IS A CONSTANT. IF x = 3 IS ONE SOLUTION TO THE EQUATION, WHAT IS A POSSIBLE VALUE OF a?

Α. 0
B. 2
C. 4
D. 6

User Aadith Ramia
by
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1 Answer

13 votes
13 votes

Answer:

Explanation:


(ax - 2)^(2) = 100

(
3a-2)^(2)=
100


Using\\ the\\ formula (a + b)^(2) = a^(2) + b^(2) + 2ab

(
3a)^(2)
+ (2)^(2) +2(3a)(2)
=100


9a^(2)+4^(2) + 12a=
100


9a^(2)+ 12a+16=100


9a^(2) +12a+116=
0


9a^(2) +3a+29

User Sfarbota
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