Math, asked by sakshisukheja39, 3 months ago

Determine wheather 3 is the root of the equation
√x^2-4x+3 +√x^2-9 =√4x^2-14x+6​

Answers

Answered by YasheekaRajput
11

height(H)=120cm

\sf\dashrightarrow \blue{diameter of roller= 84cm}⇢diameterofroller=84cm

\sf\therefore \blue{radius= \dfrac{diameter}{2}}∴radius=

2

diameter

\sf\dashrightarrow \blue{ \dfrac{84}{2}}⇢

2

84

\sf\dashrightarrow \blue{\cancel \dfrac{84}{2}}⇢

2

84

\sf\dashrightarrow \blue{radius= 42cm}⇢radius=42cm

\large\underline\mathfrak{\purple{TO\:FIND,}}

TOFIND,

\sf\dashrightarrow \red{AREA\: OF\:PLAYGROUND }⇢AREAOFPLAYGROUND

FORMULA

\rm{\boxed{\sf{ \circ\:\: C.S.A\: OF\: CYLINDER= 2 \pi rh \:\: \circ}}}

∘C.S.AOFCYLINDER=2πrh∘

\large\underline\mathtt{\purple{SOLUTION,}}

SOLUTION,

© ATQ,

\purple{\text{AREA COVERED BY ROLLER IN 1 REVOLUTION = PERIMETER OF ROLLER}}AREA COVERED BY ROLLER IN 1 REVOLUTION = PERIMETER OF ROLLER

\sf\therefore \pink{AREA \:COVERED \:IN\: ONE\: REVOLUTION= 2 \pi r h}∴AREACOVEREDINONEREVOLUTION=2πrh

\sf\implies \red{ 2 \times \dfrac{22}{7} \times 42 \times 120}⟹2× 7

Answered by Anonymous
4

Answer:

just put 3 in place of x and check the result if it coming zero means it is root of equation

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