Answers

  • Brainly User
2016-06-18T14:26:46+08:00
Solution:
2x² + 8x = x² -6x + 9
2x² - x² + 8x +6x - 9 = 0
x² + 14x - 9 = 0    Standard form

Use quadratic formula to solve for the roots:
a = 1      b  = 14       c = -9

x = -7+ \sqrt{58}   and   -7- \sqrt{58}

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