Question

can you tell the ans
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Answer 1

Answer:

1 c

2 -1

3 (2)

Step-by-step explanation:

2. put x= -1

x²+2x+1

x= -1

(-1)²+2(-1) +1

1+(-2)+1= 0

Answer 2

EXPLANATION:-

(1) WHICH OF THE FOLLOWING IS RATIONAL:-

ANS) OPT-C ∛1000

EXPLANATION:- On observing the option we find that all the number are in the form of square root which are not perfect square ,but only opt-c is in the form of cube root of 1000 which is rational

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(2)THE ZERO OF THE POLYNOMIAL x²+2x+1

ANS) OPT-D

EXPLANATION: To find the zero ,we have to factorize the expression.So let's factorize it .

x²+2x+1=(x)²+2(x)(1)+(1)²

Now using the identity of (a+b)²=a²+2ab+b²

x²+2x+1=(x+1)²

Now let's equate (x+1)² by zero to find the zero

(x+1)²=0

x+1=0

x=-1

So -1 is the zero

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(3)THE POINT (3,-2) LIES IN THE ______QUADRANT OF THE CO-ORDINATE SYSTEM

ANS)OPT-B

Explanation:- We know that ,points

(+,+) lies on 1st quadrant

(-,+) lies on 2nd quadrant

(-,-) lies on 3rd quadrant

(+,-)lies on 4th quadrant

So in the question the points are (-,+) so it will lie in 2nd quadrant