Question

please answer the given question please ​

Answer 1

Answer:

1. b

2. a

3. d

4. d

Q5 No.

Step-by-step explanation:

Q1

x² +8x +16

Formula (a+b)²= a²+ 2ab+ b²

Now (x+4)²

x²+2(x)(4)+ (8)²

x²+8x + 16

Q2

49²

breaking number 50-1 =49

taking square

(50-1)²

(50)²-2(50)(1)+(-1)²

2500-100+1

2401

and

49²=2401

Q3

Let k = -7 because 6× -7= -42 and in question -42 is given

Now solve,

(x-7)(x+6)

x(x+6) -7(x+6)

x²+6x -7x -42

x²-x -42

Q4

(2x-5)²

Formula

(a-b)²=a²-2ab+b²

Now putting values in formula

(2x)²-2(2x)(-5)+ (-5)²

4x²+20x+25

Q5

y³-2y²+3y-18

y²(y-2)+3(y-6)

(y²+3)(y-2)(y-6)

So y-3 is not a factor