3 years ago

Multiply and express your answers in mixed numbers 1/3 x 5

Mathematics

1 answer:

schepotkina [342]3 years ago

7 0

$\frac{1}{3} \times \frac{5}{1} = \frac{5}{3}$

^Here's the answer. Any number will have a denominator of 1. Then, multiply as usual and you'll get the answer.

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2 years ago

Which two values of X are roots of the polynomial below 4x^2-6x+1

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$4x^2-6x+1=0\\\\a=4,\ b=-6,\ c=1\\\\\Delta=b^2-4ac\\\\\Delta=(-6)^2-4(4)(1)=36-16=20\\\\\sqrt\Delta=\sqrt{20}=\sqrt{4\cdot5}=\sqrt4\cdot\sqrt5=2\sqrt5\\\\x_1=\dfrac{-b-\sqrt\Delta}{2a},\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\x_1=\dfrac{-(-6)-2\sqrt5}{2\cdot4}=\dfrac{3-\sqrt5}{4}\\\\x_2=\dfrac{-(-6)+2\sqrt5}{2\cdot4}=\dfrac{3+\sqrt5}{4}$