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

What does the author most likely mean by "memory is an abstract painting"?

What is the value of x? Round your answer to the nearest tenth if necessary. 14.3 Right triangle whose two legs measure fourteen and x, and whose hypotenuse

How do scientist know that seismic waves can be either compressional or transverse

A/an _______ bond allows metals to conduct electricity. A. metallic B. atomic C. ionic D. covalent

How did the Soviet Union carry out the communist policies?

)Which explanation provides the best evidence to support the interpretation that Caesar's pride led to his downfall? Caesar sleeps peacefully through the night

Three less than n equals 2 (solve for n)

explain what the cartoonist means when he said ''on no account to be used because the enemy might retaliate''

Find the volume of the prism.CmCm

By the end of Mercutio's speech about Queen Mab, how do readers imagine her? A. as adorable but tricky B. as romantic but fickle C. as frightening and evil