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Why is the answer to this C and not E. Don’t you usually keep the negative number negative? Why is this one not left negative?

Why is the answer to this C and not E. Don’t you usually keep the negative number-example-1
User Yurisnm
by
8.6k points

1 Answer

4 votes

Answer:

C

Explanation:

Given

x² = 7x - 3 ( subtract 7x - 3 from both sides )

x² - 7x + 3 = 0 ← in standard form

with a = 1, b = - 7, c = 3

Using the quadratic formula to solve for x

x = ( - (- 7) ±
√((-7)^2-(4(1)(3)) ) / 2

= ( 7 ±
√(49-12) ) / 2

=
(7+/-√(37) )/(2) → C

User Makeee
by
8.0k points

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