What is expand ,x^2-(a+d)x+(ad-bc) ?

The solution to expand ,x^2-(a+d)x+(ad-bc) is x^2-ax-dx+ad-bc

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expand ,x^2-(a+d)x+(ad-bc)

expand

x^{2} - (a + d) x + (a d - b c)

x^{2} - a x - d x + a d - b c

Solution steps

x^{2} - (a + d) x + (a d - b c)

Apply rule:

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

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

= x^{2} - (a + d) x + a d - b c

= x^{2} - x (a + d) + a d - b c

Expand

- x (a + d) : - a x - d x

= x^{2} - a x - d x + a d - b c

A (4, - 8, 3) B (2, - 1, 4) C (- 4, 9, 12)

s (7 - 12 t + t^{2} + 20 ln (t + 1))

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

A (0, 2, - 3)

\frac{( 12 t ^{2} )}{( 1 + 0.3 t ) ^{2}}

What is expand ,x^2-(a+d)x+(ad-bc) ?
The solution to expand ,x^2-(a+d)x+(ad-bc) is x^2-ax-dx+ad-bc