Solve: 2(7y+z)(3y+5z)
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2(7y+z)(3y+5z)=2×(7y×3y+7y×5z+z×3y+z×5z)
=2(21y2+35yz+3yz+5z2)
=41y2+70yz+6yz+10z2
=41y2+76yz+10z2
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Determine if the following set of polynomials fors a basis of P3 p1=3+7t,
p2=5+t−2t3,
p3=t−2t2,
p4=1+16t−6t2+2t3
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