What is expand (a=2,i-j-2k)(b=i+2j-3k) ?

The solution to expand (a=2,i-j-2k)(b=i+2j-3k) is a=i-4jk+6k^2

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expand (a=2,i-j-2k)(b=i+2j-3k)

expand

(a = 2, i - j - 2 k) (b = i + 2 j - 3 k)

a = i - 4 jk + 6 k^{2}

Solution steps

(a = 2, i - j - 2 k) (b = i + 2 j - 3 k)

= (2 =, ai - j - 2 k) (= ib + 2 j - 3 k)

Distribute parentheses

a = 2, ib = i + a = 2, i \cdot 2 j + a = 2, i (- 3 k) + (- j) b = i + (- j) \cdot 2 j + (- j) (- 3 k) + (- 2 k) b = i + (- 2 k) \cdot 2 j + (- 2 k) (- 3 k)

Apply minus-plus rules

+ (- a) = - a, (- a) (- b) = ab

a = 2, ib = i + a = 2, 2 ij - a = 2, 3 ik - jb = i - 2 jj + 3 jk - 2 kb = i - 2 \cdot 2 jk + 2 \cdot 3 kk

Expand

i - 2 \cdot 2 jk + 2 \cdot 3 kk : i - 4 jk + 6 k^{2}

a = i - 4 jk + 6 k^{2}

9 (4 - 2 M) + 2 (- 5 = 7 M)

121 π - (121 (\frac{3 π}{4} - 2))

(x e^{x y} + 2 x y + \frac{1}{x}) d x

\frac{1}{( x + 1 ) x}

(1 + c e^{- \frac{x ^{2}}{2}})^{2}

What is expand (a=2,i-j-2k)(b=i+2j-3k) ?
The solution to expand (a=2,i-j-2k)(b=i+2j-3k) is a=i-4jk+6k^2