What is expand (3)directriz(y-7=0) ?

The solution to expand (3)directriz(y-7=0) is -3edr^2ctzy+21edr^2ctz=0

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expand (3)directriz(y-7=0)

expand

(3) d i rec t r i z (y - 7 = 0)

- 3 e d r^{2} c t zy + 21 e d r^{2} c t z = 0

Solution steps

(3) d i rec t r i z (y - 7 = 0)

= (3) i e i d rrc t z (y - 7 \cdot 0 =)

Apply the distributive law:

a (b - c) = ab - a c

a = (3) d i rec t r i z, b = y, c = 7 = 0

(3) d i rec t r i zy - (3) d i rec t r i z \cdot 7 = 0

(3) i e i d rrc t zy - (3) \cdot 7 i e i d rrc t z = 0

Expand

(3) i e i d rrc t zy - (3) \cdot 7 i e i d rrc t z : - 3 e d r^{2} c t zy + 21 e d r^{2} c t z

- 3 e d r^{2} c t zy + 21 e d r^{2} c t z = 0

(\frac{1}{2} m^{x} - 6 n^{y})^{2}

(x^{2} + \frac{5}{49}) (x^{2} - 4 x + 4)

- \frac{2 sec ^{2} ( x )}{( 1 + tan ( x ) ) ^{3}}

(v y - y) (v d y + y d v)

What is expand (3)directriz(y-7=0) ?
The solution to expand (3)directriz(y-7=0) is -3edr^2ctzy+21edr^2ctz=0