What is expand (-4+i9)*(4+i9,) ?

The solution to expand (-4+i9)*(4+i9,) is -4*4-4*9i,9*4i+9*9ii,

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expand (-4+i9)*(4+i9,)

expand

(- 4 + i 9) \cdot (4 + i 9,)

- 4 \cdot 4 - 4 \cdot 9 i, 9 \cdot 4 i + 9 \cdot 9 ii,

Solution steps

(- 4 + i 9) (4 + i 9,)

= (- 4 + 9 i) (4 + 9 i,)

Apply FOIL method:

(a + b) (c + d) = a c + a d + b c + b d

a = - 4, b = i 9, c = 4, d = i 9,

= (- 4) \cdot 4 + (- 4) i 9, i 9 \cdot 4 + i 9 i 9,

Apply minus-plus rules

+ (- a) = - a

= - 4 \cdot 4 - 4 \cdot 9 i, 9 \cdot 4 i + 9 \cdot 9 ii,

\frac{18}{( t + 3 ) ^{2}}

s (- 4, - 6) an d T (- 7, - 3)

\frac{5 ( 7 + 2 x )}{4}

(\frac{3}{x})^{2}

\frac{( x + 5 ) ( x + 8 )}{70}

What is expand (-4+i9)*(4+i9,) ?
The solution to expand (-4+i9)*(4+i9,) is -4*4-4*9i,9*4i+9*9ii,