13. Here is a square.
Area
64 cm
The area of the square is 64 cm?
(a) Work out the length of one side of the square.

8

Step-by-step explanation:

√(64)

One side of the square is 8 cm

80

step-by-step explanation:

"standard form:

3x2 + 14x − 10 = 0

solutions based on quadratic formula:

x1   = −14 − √ 142 − 4×3×(−10) /   2×3   = −14 − 2 × √ 79 /   6   ≈ −5.296

x2   = −14 + √ 142 − 4×3×(−10) /   2×3   = −14 + 2 × √ 79 /   6   ≈ 0.629