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vladimir1956 [14]
3 years ago
13

Let a=x^2+4. Use a to find the solutions for the following equation:

Mathematics
2 answers:
Kitty [74]3 years ago
7 0

Answer:

-2,0, 2(+)

Step-by-step explanation:

Helga [31]3 years ago
4 0
(x^2+4)^2 + 32 = 12x^2 + 48 .... a = x^2 + 4 
<span>(x^2 + 4)^2 + 32 = 12(x^2 + 4) </span>
<span>a^2 + 32 = 12a </span>
<span>a^2 - 12a + 32 = 0 </span>
<span>(a - 8)(a - 4) = 0 </span>
<span>a = 8 and a = 4 </span>

<span>for a = 8 ... 8 = x^2 + 4 ... x^2 = 4 ... x = +/- 2 </span>
<span>for a = 4 ... 4 = x^2 + 4 ... x^2 = 0 ... x = 0 </span>

<span>x = -2, 0, +2 so your answer is going to be e

</span>
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