Question

find the value of 3x²+4x²-2,x=2,x=-2​

Answer 1

Answer:

x=2 means

= 3x2+4x2-2

=3*(2*2)+4*(2*2)-2

=3*4+4*4-2

=12+16-2

=28-2

=26

x=-2

=3x2+4x2-2

=3*(-2*-2)+4*(-2*-2)-2

=3*2+4*2-2

=6+8-2

=14-2

=12

Answer 2

Answer:

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