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Natalka [10]
3 years ago
8

Rút gọn Giúp em với ạ. em lm mãi ko ra

Mathematics
2 answers:
elena55 [62]3 years ago
5 0

Answer:

Step-by-step 12explanation:

12

anastassius [24]3 years ago
4 0

Answer:

Nhân đa thức đối xứng

(2\sqrt{3} -4)/(\sqrt{3} -1) + (2\sqrt{2} -1)/(\sqrt{2} -1) - (1+\sqrt{6} )/(\sqrt{2} +3)

=(2\sqrt{3} -4)(\sqrt{3} +1)/(\sqrt{3} -1)(\sqrt{3} +1) + (2\sqrt{2} -1)(\sqrt{2} +1)/(\sqrt{2} -1)(\sqrt{2} +1) - (1+\sqrt{6} )(\sqrt{2} -3)/(\sqrt{2} +3)(\sqrt{2} -3)

=3-\sqrt{3} -2+4+\sqrt{2} -1 +(\sqrt{2} -3+2\sqrt{3} -3\sqrt{6} )/7

= 2.900712176

Step-by-step explanation:

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John can clear a lot in 3.5 hours. His partner can do the same job in 6.5 hours.
beks73 [17]

Answer:

If you want to subtract it its -3

Step-by-step explanation:

3.5 - 6.5 = -3

4 0
4 years ago
Write y=2x^2-12x+16 in vertex form
leva [86]

Answer:

y = 2(x - 3)^{2} - 1

Step-by-step explanation:

y = 2x^{2} - 12x + 16  

y = 2(x^{2} - 6x + 8)        ( Factor out 2 )

y + 9= 2(x^{2} - 6x + 9) + 8 ( Complete the square (\frac{-b}{2} )^{2} ) Add 9 both sides  

y + 9 = 2 (x - 3)^{2} + 8      (Subtract 9 each side)  

y = 2 (x - 3) ^{2} - 1         ( simplify )

8 0
3 years ago
Factor the following equations to find the zeros of the equation.
olasank [31]

Answer:

1) 4, -5 and 3 are the ZEROES of the expression j = (p - 4)(p + 5)(p - 3)

Step-by-step explanation:

Here, the given phrase is:

j = (p - 4)(p + 5)(p - 3)

Now, here j is Expressed as the product of roots.

(p - 4),(p + 5) and (p - 3) are 3 given roots of the polynomial j.

Now, if (x-a) is the ROOT of the polynomial, then x = a is the ZERO of the POLYNOMIAL.

In this given expression:

(p-4) is the ROOT⇒  4 is the ZERO of the polynomial j.

(p+5) is the ROOT⇒  (-5) is the ZERO of the polynomial j.

(p-3) is the ROOT⇒  3 is the ZERO of the polynomial j.

Hence, here 4, -5 and 3 are the ZEROES of the expression

j = (p - 4)(p + 5)(p - 3)

8 0
3 years ago
Guys please help me with this question, I’d appreciate it a lot
anzhelika [568]
I think it would be the first one
4 0
3 years ago
Read 2 more answers
7.21 as a percentage
kirill115 [55]
721% is the right answer.
5 0
3 years ago
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