Math, asked by nikita3475, 6 months ago

9 WHAT is the value of a2 + b2 when a-b =7
and ab=18
a)75
b 95
c)85
d)80
PLS ANSWER FAST

Answers

Answered by Anonymous

5

Answer:

85

Step-by-step explanation:

a-b=7

square both side

a^2+b^2-2ab=49

a^2+b^2 -2(18)= 49

a^2+b^2= 49+36

= 85

Answered by vinibhujel

0

Answer:

In simple way,

a^+ b^= (a-b) ^+2ab

=(7)^ +2×18

= 49 + 36

= 85.

ans. c.

Previous Question

Next Question

Similar questions

Hindi, 3 months ago

Kalpana Chawla ki prasiddh ka Karan likhiye...

Science, 3 months ago

9. Formula for area calculation of cylinder a) ar b) arh C) arh d) trh? 10 Formals for yolume calculation of cylinder...

Math, 3 months ago

(a) 9 + (-2) (e) 8 + (-1) (b) - 7 +4 (f) – 5+2 (c) 3+ (-5) (g) 5+(- 6) (d) - 6 + (-8) (h) - 3+ (-4) Please explain it.

English, 6 months ago

A headmaster once told his parent that what Einstein choose as a profession would not mattter, because"he will never make a success at anything". Einstein began learning to play the violin at the age of six, because his mother wanted him to. he later became a amateur violinist, maintaining the skills through out his life. *ANSWER THE QUESTION FROM THE PASSAGE* 1. find a word from a passage...

Biology, 6 months ago

name the first stable product of calvin cycle biology ...

Social Sciences, 11 months ago

where is the big waterfall located in india?

English, 11 months ago

application letter write a letter with reference to the advertisement given in sakal newspaper for Post of secondary teacher...

Math, 11 months ago

find value of k which the points (7,2)(5,1)(3,k) are collinear...