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Write 16 × 8^2x as a power of 2 in terms of x

16 = 4 2 = (2 2 ) 2 = 2 4 8 = 2 3 , therefore 8 2x = 2 3(2x) = 2 6x 2 4 x 2 6x = 2 4 + 6x
PM
Answered by Prahlad M. • Maths tutor
7216 Views

Factorise 4x + 52

4(x+13)
NS
Answered by Nick S. • Maths tutor
3732 Views

Factorise x^(2)+5x+6

To factorise we must think what two numbers add up to 5 but times together to get 6. We know it is two numbers because it is x^(2). If it was x^(3) there could be 3 numbers, ect. We think what goes into 6: (...
TJ
Answered by Tanya J. • Maths tutor
3957 Views

Solve 5x + 3 = 45

5x + 3 = 455x + 3 - 3 = 45 - 3 (subtract 3 from both sides)5x = 42(5x)/5 = 42/ 5 (divide both sides by 5) x = 8.4 (can either be expressed as a decimal or as fraction)
CA
Answered by Caroline A. • Maths tutor
5043 Views

Three identical isosceles triangles are joined together to make a trapezium. Each triangle has base b cm and height h cm. Work out an expression, in terms of b and h for the area of the trapezium.

Formula for the Area of a triangle: A = (base x height)/ 2 Here we have three identical triangles. Therefore the formula for the Area of the three triangles: A = (b x h) x 3 / 2 = A of trapezium. Can be simp...
MC
Answered by Megan C. • Maths tutor
10018 Views