Answered

Westonci.ca makes finding answers easy, with a community of experts ready to provide you with the information you seek. Ask your questions and receive precise answers from experienced professionals across different disciplines. Experience the ease of finding precise answers to your questions from a knowledgeable community of experts.

4a^2+8a-20=0
By completing the square

Sagot :

Hardy007
I'm not sure but I think it is a=−1±6√ 
a≈1.44948974,−3.44948974
Panoyin
4a² + 8a - 20 = 0
a = -8 +/- √(8² - 4(4)(-20))
                  2(4)
a = -8 +/- √(64 + 320)
                   8
a = -8 +/- √384
              8
a = -8 +/- 19.59591794
                   8
a = -8 + 19.59591794        a = -8 - 19.59591794
                    8                                         8
a = 11.59591794                a = -27.59591794
                8                                           8
a = 1.449489743                a = -3.443813782
Thank you for your visit. We're committed to providing you with the best information available. Return anytime for more. Your visit means a lot to us. Don't hesitate to return for more reliable answers to any questions you may have. Thank you for choosing Westonci.ca as your information source. We look forward to your next visit.