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nikklg [1K]
4 years ago
5

How can you simplify this on to an expression

Mathematics
1 answer:
LiRa [457]4 years ago
4 0
Hello : 
1/(√6 -1) = (√6 +1)/(√6 -1)(√6 +1) =  (√6 +1)/(√6)²-1² ) = (√6 +1)/5
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Solve - 3 [ ( x + 2 ) ( x - 1 ) - x ^ { 2 } + 1 ] + 3 ( x - 1 ) (and could you please explain it to me?? I really don't get it.
Mazyrski [523]

Answer:

Step-by-step explanation:

(x+2)(x-1)= x^2+2x-x-2= x^2 +x -2\\\\( x + 2 ) ( x - 1 ) - x ^ { 2 } + 1 =x^2+x-2-x^2+1=x-1\\\\- 3 [ ( x + 2 ) ( x - 1 ) - x ^ { 2 } + 1 ] =-3(x-1)=-3x+3\\\\- 3 [ ( x + 2 ) ( x - 1 ) - x ^ { 2 } + 1 ] + 3 ( x - 1 ) =-3x+3+3x-3=6x\\

5 0
3 years ago
Factor completely 4xy − 7x 20y − 35. (x 5)(4y − 7) (x − 5)(4y 7) (x − 5)(4y − 7) (x 5)(4y 7).
yuradex [85]

Answer:

A)

Step-by-step explanation:

Given expression:

To factor the given expression completely.

Solution:

In order to factor the expression, we will factor in pairs.

We will factor the G.C.F of the terms in the pairs.

G.C.F. of  and  can be given as:

Thus, G.C.F. =

G.C.F. of  and  can be given as:

Thus, G.C.F. =

The expression after factoring the G.C.F. pairs is given as:

Taking G.C.F. of the whole expression as  is a common term.

The expression is completely factored.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A boy 1.6 m tall casts a 2.4 m shadow. How tall is a nearby streetlight that casts a 7.2 m shadow?
Oxana [17]
You basically need to set up a porporion:
1.6/2.4 = x/7.2
x=4.8
8 0
3 years ago
Orlo Jackman heard an ad on the radio for a weekend cruise to the Bahamas, available for $150 off the regular price this week on
SOVA2 [1]

$600 because you must multiply. 150/ (25/100)... 1,500/25= 600
5 0
4 years ago
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Melvin is pushing a tire during workout with the dimensions shown how many square inches of space has a tire covered after Melvi
valentina_108 [34]

Answer:

The answer is below

Step-by-step explanation:

The question is not complete, but I would show you how to solve it.

Solution:

A circle is the locus of a point such that its distance from a fixed point which is its center is always constant.

The tire has the shape of a circle. Therefore the distance the tire covers if it is pushed around once is the same as the circumference of the tire. The circumference is given by:

Circumference = 2πr; where r is the radius of the tire

Let us assume that the tire has a radius of 7 cm. Hence:

Circumference = 2π(7) = 44 cm

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6 0
3 years ago
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