For number 14 the answer is 10:45
Answer:
<u>Step-by-step explanation:</u>
The square of the trinomial exists only if (a + b)² = a² + 2ab + b²
1. <span>4x=7(x-3) -----> Start with the given.
2. </span><span>4x=7x-21 -----> Distribute 7 by multiplying it to the individual terms inside the parenthesis. 7(x) - 7(3) = 7x -21
3. </span><span>-3x=-21 ------> From step 2, combine like terms by transposing. The equation becomes 4x - 7x = -21. Simplifying, it becomes -3x = -21
4. x = 7 -----> Divide both sides by -3, you get the value o x.
Hope this helps :)</span>
Answer:
the given identity is true.
Step-by-step explanation:
this identity may be verified using several ways, the simpliest is:
1-sin^2xcot^2x=sin^2x;
1-cos^2 x=sin^2 x;
sin^2 x= sin^2 x.