Question

3x+y
04. Find Zeroes of the polynomial x-22-8.
1
D Xt3y c
05. In the figure ABCD is a rectangle find x and y. -->
a . ->71
O
A13B please give fast answer​

Answer 1

QUESTION 1

Find the zeros of the quadratic polynomial f(x)=x²−2x−8

ANSWER 1

f(x)=x

2

−2x−8

⇒f(x)=x

2

−4x+2x−8

⇒f(x)=x(x−4)+2(x−4)]

⇒f(x)=(x−4)(x+2)

Zeros of f(x) are given by f(x) = 0

⇒x

2

−2x−8=0

⇒(x−4)(x+2)=0

⇒x=4 or x=−2

So, α=4 and β=−2

∴ sum of zeros =α+β=4−2=2

QUESTION 2

In the given figure, ABCD is a rectangle. Find the values of x and y.

ANSWER 2

Given that AB=13,BC=7,AD=3x+y,CD=x+y

Now,

x+y=13 __ (1)

3x+y=7__ (2)

solving (1) & (2)

x+y=13

3x+y=7

________

x−3x=13−7

⟹−2x=6

⟹−x=

2

6

⟹x=−3

Now subtitute x in eq (1)

x+y=13

⟹−3+y=13

⟹y=13+3

⟹y=16.

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Answer 2

Answer:

Step-by-step explanation:

x+y

04. Find Zeroes of the polynomial x-22-8.

1

D Xt3y c

05. In the figure ABCD is a rectangle find x and y. -->

a . ->71

O

A13B please give fastx+y

04. Find Zeroes of the polynomiax+y

04. Find Zeroes of the polynomial x-22-8.

1

D Xt3y c

05. In the figure ABCD is a rectangle find x and y. -->

a . ->71

O

A13B please give fast answer​l x-22-8.

1

D Xt3y c

05. In the figure ABCD is a rectangle find x and y. -->

a . ->71

O

A13B please give fast answer​ answer​