An induction machine has stator winding which produce an mmf of the form 100cos(100 4 ) s sm f = t + f where sm f is measured in the ccw direction (as normal). the mechanical rotor speed is 400 rad/s in the ccw direction. the rotor currents have the form 100sin( 2) cos( 2) ar br i at i b ct = + = + where rm f is measured ccw relative to the rotor (as normal) and a,c > 0 . find numerical values for a , b , and c.

  steady-state operation an  induction machine has stator winding  which  producean  mmf  of the  form 100cos(100 4  )  s sm f  =  t  +  f  where  sm f  is  measured  in the  ccw direction  (asnormal). the  mechanical rotor speed  is  400 rad/s  in the  ccw direction. the  rotor currents have  the  form 100sin( 2) cos( 2) 

(5x + 3)(5x - 3)(7x + 4)(7x + 4)(x - 9)(x - 9)(-3x-6)(-3x+6)

Step-by-step explanation:

Expressions of the form (a +b)(a +b) will result in a perfect square trinomial, because both binomial factors are identical.

Expressions of the form (a +b)(a -b) will result in a difference of squares.

Match the offered choices to either one of these forms, and they will be included in the answer set.

  (5x + 3)(5x - 3) -- difference of squares

  (7x + 4)(7x + 4) -- perfect square

  (2x + 1)(x + 2) -- nothing special

  (4x-6)(x + 8) -- nothing special

  (x - 9)(x - 9) -- perfect square

  (-3x-6)(-3x+6) -- difference of squares