identify the expressions in standard form ?
i) 9x²+6x+8
ii) 9x²+15x+7x
iii) 9x²+7
iv) 9x²+15x+3
v) 15x²+x³+3x
vi) x²y+xy+3
vii)x3+x²y²+6xy
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Answer:
ii) x(9x+15+7)=0,x(9x+22)=0,9x+22=0÷2,9x+22=0,9x=-22,x=,-22÷9
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