How do I solve this equation and check all the solutions?
2 answers:
Answer:
<em>x = 12</em>
Step-by-step explanation:
+ 10 = x + 4
= x - 6
( )² = ( x - 6 )²
3x = x² - 12x + 36
x² - 15x + 36 = 0
(x - 3)(x - 12) = 0
= 3
<em> = 12 </em>
Check the answer:
+ 10 ≠ 3 + 4
13 ≠ 7 ⇒ 3 is not the root of original equation (strange root)
+ 10 = 12 + 4
16 = 16 ⇒ 12 is the root of original equation
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