Math, asked by siddhi4372, 11 months ago

5x2 = 4x +7
solve this equation using completing the square method.........plz fast ..its urgent..

Answers

Answered by sanyam3069

5x² = 4x + 7

∴[ multiply by "5"]

25x² - 20x - 35 = 0

(5x)² - 2(5x)(2) + 2² - 2² - 35 = 0

(5x - 2)² = 39

5x - 2 = +-√39

5x = +-√39 + 2

x = (√39 + 2)/5

Or,

x = (-√39 + 2)/5

this is the answer according to your question. HOPE IT WAS OF SOME HELP AND IF YES THEN PLEASE FOLLOW AND LEAVE A COMMENT

sanyam3069: I don't think so that it can be solved using complete square method

siddhi4372: sorry..but its wrong..

siddhi4372: ok..no problem

sanyam3069: sorry

sanyam3069: but couldn't help

sanyam3069: just check this one if it is correct

sanyam3069: pls check

siddhi4372: its right answer is ..2+√39/5 , 2- √39 /5

siddhi4372: thank you a lot...,☺

Previous Question

Next Question