Use distributive property to expand 3(5x-4y)-7

3*5x-3*4y-7

Step-by-step explanation:

Your distributing the 3 to the 5x and 4y which are in the parenthesis.  

idn

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