let p1(x) = x^2-3x-10 ,p2(x)=x^2-5x+1,p3(x)=x^2+2x+3 and
p4(x)=x+5
a- Using standard polynomIAL ADDITION ,what polynomial ax^2+bx+c
can be expressed as linear combination of
p1(x),p2(x),p3(X),p4(x)
b- a polynomial is equal to zero if and only if all it's
coefficient to zero . solve for a1,a2,a3,a4 by expanding ,written
as polynomial in x,and setting each coefficient equal to zero:
a1p1(x)+a2p2+a3p3(x)+a4p4(x)=0