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Sagot :
Step-by-step explanation:
1.) 3x-2x²=6x
(transpose to the right si -2x² then change sign to become positive 2x². same to positive 3x, transpose it to the right then change to negative to become -3x)
=2x²+6x-3x=0
after that, combine like terms such as 6x and -3x
=2x²+3x= 0
the value of a is the number with x², which is 2x².
the value of b is the number with a variable only, without the exponent, which is 3x.
and for c, the value of c is the number without exponent and variable. in this equation the value is zero mainly because it doesn't have a constant.
a=2, b=3, c=0
2.) (x+3)(x+4)=0
=x²+4x+3x+12=0
=x²+7x+12=0
a=1, b=7, c=12
3.)(x+2)²=3(x+2)
=(x+2)(x+2)=3x+6
=x²+4x+4=3x+6
=X²+4x-3x-6+4=0
=x²+x-2=0
a=1, b=1, c= -2
4.) 2x(x+4)=(x-3)²
=2x²+8x= (x-3)(x-3)
=2x²+8x= x²-6x+9
=2x²-x²+8x+6x-9=0
=x²+14x-9=0
a=1, b=14, c= -9
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