exam Maths Puzzle Numerical Ability

I have to write in standard form and determine the values of a,b and c.

Page 575
Number 2

x^2 + 6x - 5 = 0

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exam Other Question

Please help me with this problem:

[x-(-6+ the square root of 13)][x-(-6)-the square root of 13)] Find the product.

Thank you for your help! Solve eqation
b(5b-3)=0