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1 year ago

Find each sum or difference. (W^2 - 4w-1)+(-5+5w^2 - 3w)

Mathematics

1 answer:

inysia [295]1 year ago

5 0

$(w^2-4w-1)+(-5+5w^2-3w)$

Combine like terms:

$w^2-4w-1-5+5w^2-3w$ $w^2+5w^2-4w-3w-1-5$ $6w^2-7w-6$

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Square root of 19x exponent 2

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3 years ago

2^x + 2^-x =5/2 pls I need d. ans

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Step-by-step explanation:

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3 years ago

How can this 12×2+2³ make 120

Alex17521 [72]

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3 years ago

3x + ky = 8

sattari [20]

Answer:

(a): x is 3 and ky is -1

(b): k is -2

Step-by-step explanation:

Let: 3x + ky = 8 be equation (a)

x - 2 ky = 5 be equation (b)

Then multiply equation (a) by 2:

→ 6x + 2ky = 16, let it be equation (c)

Then equation (c) + equation (b):

${ \sf{(6 + 1)x + (2 - 2)ky = (16 + 5)}} \\ { \sf{7x = 21}} \\ { \sf{x = 3}}$

Then ky :

${ \sf{2ky = 3 - 5}} \\ { \sf{ky = - 1}}$

${ \bf{y = \frac{1}{2} }} \\ { \sf{ky = - 1}} \\ { \sf{k = - 2}}$

4 0

3 years ago

I need urgent help with this

iren2701 [21]

Answer:

A. =4x3+9x2−25x+12

Step-by-step explanation:

(x+4)(4x−3)(x−1)

=((x+4)(4x−3))(x+−1)

=((x+4)(4x−3))(x)+((x+4)(4x−3))(−1)

=4x3+13x2−12x−4x2−13x+12

=4x3+9x2−25x+12

5 0

3 years ago