Question

13)(4m+3)^2 14)(5m-4)^2 15)(2x+0,4)^2 16)(7x-0,6)^2 17)(3y+4)^2

Answer 1

Ответ:

Объяснение:13)=16m²+24m+9.

14)=25m²-40m+16.

15)=4x²+1,6x+0,16.

16)=49x²-8,4x+0,36.

17)=9y²+24y+16.

Answer 2

To expand each of the given expressions, you can use the formula for squaring a binomial:

The formula for squaring a binomial (a + b)^2 is (a + b)^2 = a^2 + 2ab + b^2.

Let's apply this formula to each expression:

13. (4m + 3)^2 = (4m)^2 + 2(4m)(3) + 3^2 = 16m^2 + 24m + 9

14. (5m - 4)^2 = (5m)^2 + 2(5m)(-4) + (-4)^2 = 25m^2 - 40m + 16

15. (2x + 0.4)^2 = (2x)^2 + 2(2x)(0.4) + (0.4)^2 = 4x^2 + 1.6x + 0.16

16. (7x - 0.6)^2 = (7x)^2 + 2(7x)(-0.6) + (-0.6)^2 = 49x^2 - 8.4x + 0.36

17. (3y + 4)^2 = (3y)^2 + 2(3y)(4) + 4^2 = 9y^2 + 24y + 16

Remember to be careful with signs when multiplying the terms together, and don't forget to perform the final simplification!