exam Maths Puzzle Numerical Ability

PLEASE HELP SOLVE

FACTOR THE POLYNOMIAL

1) X^2+10X+25

FACTOR EACH TRINOMIAL

1) 4(M-5)^2-4(M-5)-15

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exam Other Question
(a+b)2 I am having some problems here and need some help

Factor completely
6x^2-xy-5y^2
and
3x^2-5xy+3x-5y

Thank you