plz jaldi ans dedo Q 12 In the given figure, if AB∥CD, then x = - Maths - Triangles

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plz jaldi ans dedo
Q 12 In the given figure, if A B ∥ C D , then x =

Shruti Tyagi · Accepted Answer

Dear student,

Given: AB∥CD∴ ∆AOB~∆COD  ⇒AOOC=BOOD⇒2x+42x+1=2x+13⇒32x+4=2x+12x+1⇒6x+12=4x2+2x+2x+1⇒6x+12=4x2+4x+1⇒4x2-6x+4x+1-12=0⇒4x2-2x-11=0using discriminate methodD=b2-4ac=-22-4×4×-11=4+176=180Now, x=-b±D2a⇒x=--2±1802×4⇒x=2±658⇒x=1±354neglecting the negative part⇒x=1+354

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plz jaldi ans dedo Q.12. In the given figure, if A B ∥ C D , then x =

plz jaldi ans dedo
Q.12. In the given figure, if $A B ∥ C D$ , then x =