exam Maths Puzzle Numerical Ability

Solve the equation using the zero factor property.

2w(4w+1)=1

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exam Other Question

Complete the ordered pairs for the equation y = 8x + 8.

( ,0), (3/8, ), (0, ), (-3/8, )

No book. Thanks so much!!!
please help me solve the following equations:

[x-5]=15

3[x]-5=1

[x]+5=15

3[2x-5]-2=7