exam Maths Puzzle Numerical Ability

Ok here we go...LOL...:)
Can you help me?

Page 285
Number 20

Using the formula for binomial squared to multiply....

(6x+5)^2

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exam Other Question

i have been given this problem in my homework


1.866^(x-2)=1/1.244^(4.x)

any help with it would be greatly used
many thanks x
Please help find the slope and y intercept of y = -3/8x + 7

Thank you