exam Maths Puzzle Numerical Ability

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!

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exam Other Question

write an algebric expression for the sum of a number and 7

write an algebric expression for the product of 5 and a number

write an algebric expression one half the cube of n
I have to write in standard form and determine the values of a,b and c.

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Number 2

x^2 + 6x - 5 = 0