Step-by-step explanation:
We have:
x - y = 43 , xy = 15
To find, the value of x^2+y^2x
2
+y
2
= ?
∴ x - y = 43
Squaring both sides, we get
(x - y)^2(x−y)
2
= 43^243
2
⇒ x^2+y^2x
2
+y
2
- 2xy = 1849
Using the algebraic identity,
(a - b)^2(a−b)
2
= a^2+b^2a
2
+b
2
- 2ab
⇒ x^2+y^2x
2
+y
2
= 1849 + 2xy
Put xy = 15, we get
x^2+y^2x
2
+y
2
= 1849 + 2(15)
⇒ x^2+y^2x
2
+y
2
= 1849 + 30
⇒ x^2+y^2x
2
+y
2
= 1879
∴ x^2+y^2x
2
+y
2
= 1879
I will send hint follow this hint then slove it .
thankyou
Problem
Is 4.55 and 1.23456 a rational number
Solution
4.55 can be written as:
455/100 so then it could be a rational number
For the second number we have: 1.23456
And we can write this number as:
123456/100000
So then is also ratioanl
Answer: u= 
Step-by-step explanation:
uw + uq = r To solve for u factor the left side to eliminate the other variables.
u ( w + q) = r Now divide both sides by w+q
u =
Answer:
5.833
Step-by-step explanation:
Step-by-step explanation:
2 + 3 × (8 + 53 ÷ 1)
we first work out the equation in the brackets
so...
(8 + 53 ÷ 1)
division comes first so we divide 53÷1 which is 1 so the equation looks like this:
(8+53)
we work this out and get
61
then we work the rest out
2 + 3 × <u>61</u>
multiplication comes first so...
3×61= 183
and
2+ 183= 185
Therefore 2 + 3 × (8 + 53 ÷ 1)= <u>185</u>
Hope this helped- have a good day bro cya)
