Answers

  • Brainly User
2016-07-03T23:28:47+08:00
If -6 and 42 are constant, then:

4x² - 6 + 6 = 42 + 6

4x² = 48

4x²/4 = 48/4

x² = 12

 \sqrt{ x^{2} } =  \sqrt{12}

x =  \sqrt{(4)(3)}

x = +2 \sqrt{3}  and -2 \sqrt{3}
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