Answer:
a=54iiiipoiujhghnmn n
Step-by-step explanation:
I think (jk) (x) means j times k
(jk) (x) = -7x(9 - 2x) //Using Distributive Property.
(jk) (x) = -63x + 14x^2 = 14x^2 - 63
//Hope it helps.
You should sum the fraction
Next step mix number
x = 29