sadcase85
08.10.2019 •
Mathematics
What would be the most logical first step for solving this quadratic equation? x2 + 2x + 13 = -8 a. take the square root of both sides b. divide both sides by x c. subtract 13 from both sides d. add 8 to both sides
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Ответ:
D
Step-by-step explanation:
Given
x² + 2x + 13 = - 8
To be able to factor the quadratic and go on to solve we require the equation to be in standard form, that is
ax² + bx + c = 0, thus
Add 8 to both sides ← first step, gives
x² + 2x + 21 = 0 ← in standard form
Ответ:
it is b
Step-by-step explanation: