exam Maths Puzzle Numerical Ability

Eight times a number plus 6 less than twice the number is 34

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exam Other Question

Please help me with this problem, im stuck.

Factor completely.

4a^2 + 12ab + 9b^2 - 25c^2 Determine whether the following equations have a solution or not? Justify your answer.
2x2 + 5x + 5 = 0