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3 years ago

Factor 12y^2 + 5y -2 completely

Mathematics

2 answers:

oksian1 [2.3K]3 years ago

7 0

Answer: (4y - 1)(3y + 2)

Step-by-step explanation:

$12y^{2} +5y-2\\=(4y - 1)(3y + 2)$

You can also do it the long way using the quadratic formula: $\frac{-b+-\sqrt{b^{2} -4ac} }{2a}$ , where a = 12, b = 5, and c = -2.

Ede4ka [16]3 years ago

4 0

Answer: (4x-1)(3x+2)

Step-by-step explanation:

do u know how to factor?

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nancy spent 7/8 hour working out at the gym she spent 5/7 of that time lifting weights what fraction of an hour did sje spentld

Juli2301 [7.4K]

$\frac{9}{56}\\$ Fraction of hour was spent by NAncy in lifting weights

Step-by-step explanation:

Time spent at the gym by Nancy = $\frac{7}{8}\,hour$

Time spent at lifting weights = $\frac{5}{7}\,hour$

What fraction of hour she spent in lifting weights?

Solving:

Fraction of hour she spent in lifting weights= Time spend at the gym-Time spent at lifting weights

Fraction of hour she spent in lifting weights= $\frac{7}{8}\,hour-\frac{5}{7}\,hour$

$=\frac{49}{56}-\frac{40}{56}\\=\frac{49-40}{56}\\=\frac{9}{56}\\$

So, $\frac{9}{56}\\$ Fraction of hour was spent by Nancy in lifting weights

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