poojaaa1
poojaaa1
24-12-2017
Mathematics
contestada
Can somebody help me with 16?
Respuesta :
tynollette
tynollette
24-12-2017
expand the expression: 4ax²-4x+4ax-4-x²+4=bx
combine like terms: (4a-1)x²+(4a-4)x=bx
there is no x² on the right side, which means 4a-1=0, a=1/4
4a-4=b
4(1/4)-4=b
b=-3
B is the correct choice.
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