exam Maths Puzzle Numerical Ability

Factor the expression 4n^3 + 8n^2 - 5n - 10

Factor k^2 + kf - 2f^2

Factor 6g^2 + 11g - 35

I am not sure how to factor these. I am especially "stuck" on the one that uses kf.

Can you help? Thanks!

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exam Other Question

When you have a problem b+4b=-90. What do you do fist and how you solve the problem. please help me with these problems.

Write the equation of the line passing through each of the given pairs, write your result in slope-intercept form, when possible.

(-1,3)and (4,-2)

(2,-3)and (2,4)

Thank you for your help