The standard form of a quadratic equation is: ax^2 + bx + c
From this comparison, it is easy to see that a is 48, b is -192, and c is 84. Notice that the negative/positive sign goes with each numerical coefficient.
So the values of the coefficients are 48, -192, and 84.
Ok so we just expand using distributive propety a(b+c)=ab+ac we can put the 6 to the side since multiplication is commmutative and assocative (4x-2)(6)(2x-7)=6[(4x-2)(2x-7)] we distribute the inner for ease
(4x-2)(2x-7)= (4x-2)(2x)+(4x-2)(-7)= (4x)(2x)+(-2)(2x)+(4x)(-7)+(-2)(-7)= 8x^2+-4x+-28x+14= 8x^2-32x+14 then times 6 the whole thing for all terms 48x^2-192x+84 ax^2+bx+c
To get the answer we can use proportion 40% ----------------- 34 100% --------------- x crossmultiply now 40x=100*34 40x=3400 /:40 divide both sides by 40 x=3400:40 x=85 - its the answer
