3 years ago

Equation equivalent to 5x(3x+4)

Mathematics

2 answers:

Vika [28.1K]3 years ago

7 0

use the distributive property

5x(3x+4)

15x^2 +20x

defon3 years ago

4 0

Using distributive property, we can find that
15X^2+20X is the same as 5X(3X+4)

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timama [110]

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Then

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Multiply numerator and denominator by the denominator's conjugate:

$\dfrac{3\pm\sqrt5}{15\pm5\sqrt5}\cdot\dfrac{15\mp5\sqrt5}{15\mp5\sqrt5}=\dfrac{45\pm15\sqrt5\mp15\sqrt5-25}{15^2-(5\sqrt5)^2}=\dfrac{20}{100}=\dfrac15$

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