Guy567123 Guy567123

15-06-2017
Mathematics

contestada

If (a+b)2 = 9 and (a−b)2 = 49, what is the value of a2+b2?

Respuesta :

konrad509 konrad509

15-06-2017

[tex](a+b)^2+(a-b)^2=a^2+2ab+b^2+a^2-2ab+b^2=2a^2+2b^2=\\ 2(a^2+b^2)\\\Downarrow\\ 2(a^2+b^2)=9+49\\ 2(a^2+b^2)=58\\ a^2+b^2=29 [/tex]

Answer Link

Otras preguntas

Children learn the ways of their elders, and the values, norms, and behaviors of a society are perpetuated, which is known as: Group of answer choices social re

If 3.00 mL of 0.0250 M CuSO4 is diluted to 25.0 mL with pure water, what is the molarity of copper(II) sulfate in the diluted solution

financial institutions are important to the us economy because they

Researchers want to see if an athlete's diet affects his speed. Thirty participants are given either a carbohydrate loaded diet or a protein loaded diet and the

A small rubber ball is launched by a compressed-air cannon from ground level with an initial speed of 19.8 m/s directly upward. Choose upward as the positive di

Over longer periods of time, increases in oil prices provide firms with incentives to explore and recover oil. What does this indicate about the long run price

PLEASE HELP ASAP DUE IN 5 MIN PLEASEEEE !!!!!! Which best compares the maximum value of the two functions? A . The maximum value is the same for both functions

3Ba+Al2(SO4)3 -->2Al+3BaSO4, how many grams of aluminum will be produced if 1.0 g of Ba react with 1.80 g of Al2(SO4)3? Using the balanced equation 3Ba+Al2(S

About how many Navajo code talkers served during World War II?

What relationship is represented by the graph