Question

Factoriseis
1. 8n square - 50
2. 4x square + 8x - 5
3. 18x cube - 32x
4. 3x square - 10x + 8​

Answer 1

2) 4x^2+8x-5

4x^2+(10-2) x-5

4x^2+10x-2x-5

2x(2x+5)-1(2x-5)

(2x+5)(2x-1)=0

Ans :- x=-5/2, 1/2.

4) 3x^2-10x+8

3x^2 -(12-2)x+8

3x^2-12x+2x+8

3x(x-4)+2(x-4)

(x-4)(3x+2)=0

Ans :- x=4, -2/3.

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Answer 2

i am sure he is right.