Question

16x^2 +kxz +25z^2 is perfect square find K​

Answer 1

Answer:

40

Step-by-step explanation:

(4x+5z)²

$(x + y) {}^{2} = x {}^{2} + y { }^{2} + 2xy$

16x²+40xz+25z²=16x²+kxz+25z²

40xz=kxz

40=k