Question

I factorise
ca x²_17x+16
(6) 28 - 31x-5x²​

Answer 1

Answer:

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Answer 2

a) x²-17x+16=0

x²-(16+1)x+16=0

x²-16x-x+16=0

x(x-16) -1(x-16) =0

(x-16) (x-1) =0

:.x-16=0 :.x-1=0

x=16 x=1

b) 28 - 31x-5x²=0

-(5x²+31x-28)=0

5x²+31x-28=0

5x²+(35-4)x-28=0

5x²+35x-4x-28=0

5x(x+7)-4(x+7)=0

(x+7)(5x-4)=0

:.x+7=0 5x-4=0

:.x=-7 x=4/5

Hope its Help:)

GM❤