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3 years ago

Factorise fully 4x^2+28x^3

Mathematics

2 answers:

olga_2 [115]3 years ago

8 0

Answer:

4x²×(1+7x)

Step-by-step explanation:

Novosadov [1.4K]3 years ago

4 0

Answer:

$4x^2+28x^3 : 4x^2 (7x + 1)$

Step-by-step explanation:

$4x^2+28x^3$

Apply exponent rule: $\:a^{b+c}=a^ba^c$

$x^3=xx^2$

$=28xx^2+4x^2$

Rewrite $28$ as $4\cdot \:7$ :

$=4\cdot \:7xx^2+4x^2$

Factor out common term $4x^2$ :

$=4x^2\left(7x+1\right)$

Hope I helped, if so may I get brainliest and a thanks?

Thank you, have a good day! =)

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3 years ago

Read 2 more answers

The wind is blowing N 35.0 degrees W at 1.60 * 10^2 mph. A plane has an engine speed of 3.20 * 10^2 mph. Where should the pilot

andreyandreev [35.5K]

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Step-by-step explanation:

First step: DRAW A PICTURE of the vectors from head to tail (see image)

I created a perpendicular from the resultant vector to the vertex of the given vectors so I could use Pythagorean Theorem to find the length of the perpendicular. Then I used that value to find the angle of the plane.

Perpendicular (x):

cos 35° = adjacent/hypotenuse

cos 35° = x/160

→ x = 160 cos 35°

Angle (θ):

sin θ = opposite/hypotenuse

sin θ = x/320

sin θ = 160 cos 35°/320

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Svetlanka [38]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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