Question

= а) 2x x 3x x 4x ... in - neral Section - Classwork Jis tell and write the products as quickly as possible. b) 4y X (- 5y) = d) (- 2xy) x y X (- 3xºyz) f) 2x (3x - 7) g) h - ab (a + b) | Mxy + x + y) i) ab (ab - a + 1) a) If a = x and b = 2x2, then 2ab = df-3ab X (-4a²b) = 4P (p+5) plied 5-6x (3x – 2y) == II = b)If x = 2p and y = 3p', then 3xy Lels investigate the tricky process of multiplication shown below. 1x 2 YVY​

Answer 1

Answer:

The narrow sphere on the earth which sustain life is called biosphere

Answer 2

Answer:

x = (√2+1)^1/3 - (√2–1)^1/3. ……………….(1).

Cubing both sides.

[ Formula : (a - b)^3 = a^3 - b^3 -3.a.b.(a+b).}

or, x^3 = (√2+1) -(√2–1) - 3.(√2+1)^1/3.(√2–1)^1/3.{(√2+1)^1/3-(√2–1)^1/3}

Putting {(√2+1)^1/3-(√2–1)^1/3} = x.

or, x^3 = √2+1-√2+1 -3.{ (√2)^2-(1)^1}^1/3. {x} .

or, x^3 = 2 - 3.(1)^1/3.x

or, x^3 = 2 - 3.x

or, x^3 +3.x = 2. Answer.