When the quadratic equation y = (x − 3)(4x + 2) is written in standard form, what is the value of the coefficient "b?"

Question

anonymous · Answer

$$y=ax^2+bx+c$$

anonymous · Answer

that's standard form.

anonymous · Answer

you have to distribute out $$y = (x − 3)(4x + 2) $$

anonymous · Answer

4x^2 -10x -6
-10 is b ( use the standard form)

hartnn · Answer

simply multiply term by term,and compare with ax*x+bx+c...so 4x*x+(-12+2)x-6...so b is -10

anonymous · Answer

wow give answers much guys?

amistre64 · Answer

y = (a+b)(m+n)
  = am + an + bm + bn
  = am + (an + bm) + bn

farmdawgnation · Answer

@hartnn Please try to engage the user in learning, instead of just giving them the answer in the future. Thanks.

hartnn · Answer

roger that

lgbasallote · Answer

sadly @shayyeatsrainbows 's not engaging either...