3/Write the numerical coefficients of each term of the following algebraic expression:
(a) 3x4 + 2x3 + 4x2 - 8x +7
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3×4+2×3+4×2-8x+7
=12+6+8-8x+7
=18+8-8x+7
=26-8x+7
=33-8x
=-8x+33=0
=>-(8x-33)=0
=>8x-33=0
=>8x=33
=>x=33/8
=>x=1.425
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