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lilavasa [31]
3 years ago
14

Solve for the quadratic equation x^2=42 explain answer please

Mathematics
2 answers:
bixtya [17]3 years ago
6 0

Answer:

40

Step-by-step explanation:

RideAnS [48]3 years ago
3 0

Answer:x^2 to the 2nd power = 42

!!!!!

Step-by-step explanation:

!!! enjoy

You might be interested in
• Given the function, f(x) = x3 – 5x2 + 9x – 45, determine the number of roots and identify them.
dezoksy [38]
x3 - 5x2 + 9x - 45 = 0
 It is a polynomial of degree three, therefore, it has three roots.
 For this case, what we can do is factorize to write the polynomial in an easier way and thus be able to find the roots.
 Factoring we have:
 (x - 5) (x ^ 2 + 9) = 0
 x = 5
 x = 3i
 x = -3i
 Answer: 
 three roots: 
 x = 5 
 x = 3i 
 x = -3i
6 0
3 years ago
the length of a rectangle is 5cm greater than the width. the area of the rectangle is 84cm squared. find the length and width
Ymorist [56]

Answer:

Therefore,

Length=12\ cm

Width= 7\ cm

Step-by-step explanation:

Let the Width of rectangle be 'x' cm.

Then the length of a rectangle will be (x + 5) cm.

Area of rectangle given is 84 cm squared.

To Find:

Length = (x+5) = ?

Width = x = ?

Solution:

We have area of rectangle given as

\textrm{Area of Rectangle}=Length\times Width

Substituting the given values we get

84=(x+5)x\\x^{2} +5x-84=0\\

On factorizing we get

x^{2} +12x-7x-84=0\\x(x+12)-7(x+12)=0\\(x+12)(x-7)=0\\(x+12)=0\ or\ (x-7)=0\\x=-12\ or\ x=7\\\therefore x =7\ cm\ \textrm{As x cannot be negative}

Therefore,

Length=x+5=7+5=12\ cm

Therefore,

Length=12\ cm

Width= 7\ cm

8 0
3 years ago
PLZ HELP QUICK
amid [387]

just factorise it so the answer will be (3x+2)(x-4)

3 0
3 years ago
Length = 7.5 Width = 5 Height = 1 Surface Area = 100 inches squared Shape = rectangular prism or box What is the surface area of
liberstina [14]

Step-by-step explanation:

hete is your formula this u can find answer

4 0
3 years ago
I need help big time. Will reward BRAINLIEST to BEST answer!!!
Kisachek [45]
The find the equation of a line in any form, you will have to find out the slope first:
m=(y2-y1)/(x2-x1)=(48-12)/(32-34)=-18
the simplified form is the slope-intercept form, so next we need to find the y intercept, 
y=mx+b =>y=-18x+b
Use any of the two given points to find out b: 12=-18(34)+b =>b=624
so the equation is: y=-18x +624
Please double check the calculation by yourself
4 0
3 years ago
Read 2 more answers
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