jaredlewq jaredlewq

25-07-2018
Mathematics

contestada

If [tex] a^{2}+bx^{2} =13 [/tex], and ab=6, find the value of
a)[tex] (a+b)^{2} [/tex]
b)[tex] (a-b)^{2} [/tex]

Respuesta :

06-08-2018

[tex]a^2-b^2=13;\ ab=6[/tex]

[tex]a)\\(a+b)^2=a^2+2ab+b^2=(a^2+b^2)+2(ab)=13+2\cdot6=25\\\\b)\\(a-b)^2=a^2-2ab+b^2=(a^2+b^2)-2(ab)=13-2\cdot6=1[/tex]

Answer Link

Otras preguntas

How many half metres together measure 4 1-2m

How is per capita GDP calculated, and what does it tell us about the economy? Explain

Jean-Jacques Rousseau’s main argument was that a government should __________.

The length of a rectangle is 11 in. longer than its width. The perimeter of the rectangle is 86 in.What is the length of the rectangle? 38 in. 32 in

the problem is kamala had 5,026 grams flour in a canister.she brought a 4,158 gram bag of flour.she poured some flour from the bag to the canister.as the resul

What is the difference between a Theme and a moral?

The sum of half a number and two-thirds of the number is less than 14

What is 2 5/12 + 1 4/5? With work.

For exercise, mr.harris walked 1 and 3 fourths miles 5 times last week.how many miles did he walk in all?

Why is the Holy Land an important site for your faith? answered from Moses, Jesus, and Muhammads point of view