MatteBlack5490
05.12.2019 •
Mathematics
Which document protects dignity and feelings more than finances?
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Ответ:
Factor 3x²−2x−8
1. Multiply 3 by -8, which is -24.
2. Ask: Which two numbers add up to -2 and multiply to -24?
3. 4 and -6
4. Rewrite −2x as the sum of 4x and −6x:
Factor out common terms in the first two terms, then in the last two terms
Factor out the common term 3x+4
Solve for x
1. Ask: When will (3x+4)(x−2) equal zero?
2. When 3x+4=0 or x−2=0.
3. Solve each of the 2 equations above:
x = −4 / 3,2