3 years ago

3. Which expression is a simplified form of 3x2 - 4x + 5 – x2 + 2x - 1?

Mathematics

1 answer:

Sphinxa [80]3 years ago

7 0

Answer:

Option a

Step-by-step explanation:

Adding them, you get 2x²-2x+4

Answered by GAUTHMATH

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X^2/3 = 64
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it is easier to first find square root of 64 and than power it to 3
square root of 64 is 8 which means our equation now looks like:
x = 8^3
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What is<br> -1 5/6 - (-3 1/4) ?

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Answer:

$1\frac{5}{12}$

Step-by-step explanation:

Eliminating a negative and changing our operation

$1\frac{5}{6} +3\frac{1}{4}$

Rewriting our equation with parts separated

$-1-\frac{5}{6} +3+\frac{1}{4}$

Solving the whole number parts

$-1+3=2$

Solving the fraction parts

$-\frac{5}{6} +\frac{1}{4} =[?]$

Find the LCD of 5/6 and 1/4 and rewrite to solve with the equivalent fractions.

LCD = 12

$-\frac{10}{12} +\frac{3}{12}=-\frac{7}{12}$

Combining the whole and fraction parts

$2-\frac{7}{12} =1\frac{5}{12}$

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Step-by-step explanation:

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