Question

Q The expression 5(3y - 2) (3y+5) = Ay^2 + By + C is true for all values of y . Calculate A - B + C

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Answer 1

Answer:

Given,

5(3y-2)(3y+5)=ay2+by+c

ay2+by+c=5(3y-2)(3y+5)

=5(9y2+15y-by-10)

=5(9y2+9y-10)

=45y2+45y-50

ay2+by+c=45y2+45y-50

equating by coefficients ,

a=45,b=45,c=-50

a-b+c=45-45-50=(-50)

Answer 2

Answer:

-50 is the answer and it is solved in the attachment

hope it helps you misty dear