Math, asked by rithrock, 1 year ago

plzzzz answer plzzzz don't ignore

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Answered by sudhritiduttac

Sorry, i don't want to ignore i know you want the answer badly...but I can't answer it because it's too tough as i am in grade VI

rithrock: then don't answer

rithrock: pls

sudhritiduttac: i wrote because i didn't wanted to ignore...

rithrock: don't answer if you don't know it makes me feel bad

rithrock: I mean it makes me sad

rithrock: and ANGRY

lalita2074: Ans is 5

rithrock: how

lalita2074: As it is common sence the 625 can be obtained when we square a no. Because area of square is side square and the side should be 25 to get square 625

lalita2074: Got it

Answered by debtwenty12pe7hvl

side of the square =[4x +5]

area of a square = side ^2 =[4x +5]^2 = 625

∴[4x +5]^2 = [4x]^2 + 2*4x*5 +5^2 [ applying (a+b)^2 = a^2 =2ab +b^2]

⇒ 625 =16x^2 +40x +25

⇒625 -25 =16x^2 +40x

⇒2x^2 +5x -75 = 0 [taking 8 as common]

⇒2x^2 +15x - 10x -75 = 0

⇒x [2x +15 ] -5 [2x +15 ]

⇒ [2x +15 ] [ x - 5] =0

⇒[2x +15 ] =0 ⇒x = -15/2 [neglect this value as it is negative ]

⇒ [ x - 5] =0 ⇒ x= 5 .....................................................ANS

⇒length of each side = [4x +5] =4*5 +5 =25 units ..ANS

if it is helpful plz mark me brainly

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