Question

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Answer 1

Hey there

Mark it as the BRAINLIST

QUESTION 1

1.)(x+8)(x-10)

And we knows a identity (x+a)(x-b)= (x+a)(x-b)

= x(x-b)+a(x-b)

= x²-bx+ax-b

Solve it yourself.... By just putting 4 the value and then first solving the bracket

2.) in 2nd question we are a given ( y square +3/2)(y square - 3/2)

So there's a identitity

(a+b) (a-b) = a square - b square

So here a= y square

And b= 3/4

So

( y square) to the whole square - 3/2 whole square

Which is y to the power 4 -9/4

3.) Find the attachment for it

For the second part do middle term splitting ( kuch toh solve karenge apne aap)

4.)(a+b+c) whole square = a square+ b square + c square +2ab+2bc+2ca

Here in 4th

A=1X SQUARE

B= -2y SQUARE

C= - 3z square

Solve it by putting the values and u will get the answer

6 one - will be

100 square - 1 square = 99 ka square

Solve it and u will get 99 square value

Same for 998 whole square it will be

1000 whole square - 2 squares

Solve it and find

In 5th one use the identity a cube - b cube

Where in fists part

A=x square

B= 2/3y

In second part

A= x+1

B=.x-1